@article{Rempe2022,

title = {Resilience of woody ecosystems to precipitation variability},

author = {D Rempe and EL McCormick and WJ Hahm and GG Persad and C Cummins},

doi = {https://doi.org/10.31223/X5XW7D},

year  = {2024},

date = {2024-12-31},

urldate = {2022-12-31},

journal = {EarthArXiv},

keywords = {climate change, Drought, ERCZO, precipitation, woody plants},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Lapides2024,

title = {Causes of missing snowmelt following drought},

author = {DA Lapides and WJ Hahm and DM Rempe and DN Dralle},

doi = {https://doi.org/10.31223/X5591F},

year  = {2024},

date = {2024-10-01},

journal = {Geophysical Research Letters},

keywords = {},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Bradman2024,

title = {Colony characteristics of the functions of Margaritifera falcata in the Eel River },

author = {E Bradman and E Evans and J Nguyen and T Mai },

doi = {https://doi.org/10.21973/N3R94R},

year  = {2024},

date = {2024-06-30},

journal = {CEC Research},

volume = {7},

issue = {2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Elshoff2024,

title = {Microhabitat, morphology, and physiology of two riparian liverwort species (Conocephalum conicum and Marchantia polymorpha) in northwest California},

author = {K Elshoff and A Keen and E Wohlenberg and C Zechiel},

doi = {https://doi.org/10.21973/N31Q17},

year  = {2024},

date = {2024-06-30},

urldate = {2024-06-30},

journal = {CEC Research},

volume = {7},

issue = {2},

keywords = {},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Lapides2023,

title = {Inclusion of bedrock vadose zone in dynamic global vegetation models is key for simulating vegetation structure and functioning},

author = {DA Lapides and WJ Hahm and M Forrest and DM Rempe and T Hickler and DN Dralle

},

doi = {https://doi.org/10.5194/egusphere-2023-2572},

year  = {2024},

date = {2024-06-30},

urldate = {2023-11-28},

journal = {EGUsphere},

keywords = {ERCZO},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Rempe2024,

title = {Mechanisms underlying the vulnerability of seasonally dry ecosystems to drought (In Review)},

author = {DM Rempe and EL McCormick and WJ Hahm and G Persada and C Cummins and DA Lapides and KD Chadwick and DN Dralle},

year  = {2024},

date = {2024-06-30},

urldate = {2024-06-30},

journal = {Global Change Biology},

keywords = {ERCZO},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Lapides2022,

title = {Missing snowmelt runoff following drought explained by root-zone storage deficits},

author = {D Lapides and WJ Hahm and D Rempe and DN Dralle},

doi = {http://doi.org/10.31223/X5591F },

year  = {2024},

date = {2024-06-30},

urldate = {2023-09-30},

journal = {PNAS},

keywords = {Drought, ERCZO, root zone, snow melt},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Golla2024,

title = {Weathering Incongruence in Mountainous Mediterranean Climates Recorded by Stream Lithium Isotope Ratios},

author = {JK Golla and J Bouchez and ML Kuessner and JL Druhan},

doi = {https://doi.org/10. 1029/2023JF007359},

year  = {2024},

date = {2024-03-22},

journal = {JGR Earth Surface},

volume = {129},

issue = {3},

keywords = {ERCZO},

pubstate = {published},

tppubtype = {article}

}

@article{Crutchfield-Peters2024,

title = {Deep rhizospheres extend the nitrogen cycle meters below the base of soil into weathered bedrock},

author = {K Crutchfield-Peters and DM Rempe and AK Tune and TE Dawson},

doi = {https://doi.org/10.1101/2024.01.08.574278},

year  = {2024},

date = {2024-01-19},

journal = {bioRxiv},

abstract = {Nitrogen is the most limiting nutrient to forest productivity worldwide. Recently, it has been established that diverse ecosystems source a substantial fraction of their water from weathered bedrock, leading to questions about whether root-driven nitrogen cycling extends into weathered bedrock as well. In this study, we specifically examined nitrogen dynamics using specialized instrumentation distributed across a 16 m weathered bedrock vadose zone (WBVZ) underlying an old growth forest in northern California where the rhizosphere—composed of plant roots and their associated microbiome—extends meters into rock. We documented total dissolved nitrogen (TDN), dissolved organic carbon (DOC), inorganic N (ammonium and nitrate) and CO2 and O2 gasses every 1.5 m to 16 m depth for two years. We found that biologically available nitrogen in the weathered bedrock rhizosphere was comparable in concentration to temperate forest soils and primarily organic. TDN concentrations in the WBVZ exhibited distinct patterns with depth and were correlated with periods of increased whole-ecosystem metabolic activity as well as stream discharge, suggesting competing rhizosphere and leaching processes in the fate of TDN in the WBVZ. Carbon isotope composition of the DOC suggests that dissolved organic matter in the WBVZ is primarily derived from fresh plant sources. We conclude that N cycling in the WBVZ is driven by an active rhizosphere meters below the base of soil and represents an important and overlooked component of deeply rooted ecosystems that must be incorporated into future models and theory of ecosystem function.},

keywords = {ERCZO},

pubstate = {forthcoming},

tppubtype = {article}

}

@article{Georgakakos2023,

title = {Spring temperature predicts upstream migration timing of invasive Sacramento pikeminnow within its introduced range},

author = {PB Georgakakos and DN Dralle and ME Power},

doi = {https://doi.org/10.1007/s10641-023-01486-y},

year  = {2023},

date = {2023-11-23},

urldate = {2023-11-23},

journal = {Environ Biol Fish},

volume = {106},

pages = {2069–2082},

abstract = {Rapid climate change and invasive species introductions threaten ecological communities across the globe. Freshwaters are particularly vulnerable and impacted, especially when these stresses coincide. We document the migration of an invasive piscine predator, the Sacramento pikeminnow (Ptychocheilus grandis), within its introduced range, the South Fork Eel River, California, USA. Snorkel surveys and temperature monitoring in 2015–2019 showed that pikeminnow migrate upstream during spring and early summer, with earlier migration in warmer years. We developed a statistical temperature model to forecast the timing and extent of upstream migration by pikeminnow under varying combinations of discharge and air temperature. Modeled river temperature increased with air temperature and downstream and decreased with discharge. In years with low discharge and high air temperature, we predict pikeminnow will move upstream earlier, increasing spatial and temporal overlap in their summer range with native fishes. Managing conditions that reduce pikeminnow co-occurrence with native fishes (i.e., decreasing river temperature) could increase amount and duration of predator-free habitat for native fishes. We predict invasive pikeminnow will have larger impacts on invaded riverine communities with global warming and increasing drought severity. Knowledge of life history and phenology, for pikeminnow and other organisms, can guide effective management as conditions change and help to limit adverse impacts of introduced organisms on native species.},

keywords = {ERCZO, migration, Sacramento pikeminnow},

pubstate = {published},

tppubtype = {article}

}

@article{Tornabene2023,

title = {Broad-Scale Assessment of Methylmercury in Adult Amphibians},

author = {BJ Tornabene and B Hossack and BJ Halstead and CA Eagles-Smith and MJ Adams and AR Backlin and AB Brand and CS Emery and RN Fisher and J Fleming and BM Glorioso and DA Grear and EH Campbell Grant and PM Kleeman and DAW Miller and E Muths and CA Pearl and JC Rowe and CT Rumrill and JH Waddle and ME Winzeler and KL Smalling},

doi = {https://doi.org/10.1021/acs.est.3c05549},

year  = {2023},

date = {2023-10-30},

urldate = {2023-10-30},

journal = {Environmental Science & Technology},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rose2023,

title = {Identifying drivers of population dynamics for a stream breeding amphibian using time series of egg mass counts},

author = {JP Rose and SJ Kupferberg and RA Peek and D Ashton and JB Bettaso and S Bobzien and RM Bourque and KGH Breedveld and A Catenazzi and JE Drennan and E Gonsolin and M Grefsrud and AE Herman and MR House and MR Kluber and AJ Lind and KR Marlow and A Striegle and M van Hattem and CA Wheeler and JT Wilcox and KD Wiseman and BJ Halstead},

editor = {AM Kramer},

url = {https://angelo.berkeley.edu/wp-content/uploads/sites/59/Ecosphere-2023-Rose.pdf},

doi = {10.1002/ecs2.4645},

year  = {2023},

date = {2023-08-24},

urldate = {2023-08-24},

journal = {Ecosphere},

volume = {14},

issue = {8},

pages = {e4645},

abstract = {The decline in amphibian populations is one of the starkest examples of the biodiversity crisis. For stream breeding amphibians, alterations to natural flow regimes by dams, water diversions, and climate change have been implicated in declines and extirpations. Identifying drivers of amphibian declines requires long time series of abundance data because amphibian populations can exhibit high natural variability. Multiple population viability analysis (MPVA) models integrate abundance data and share information from different populations to estimate how environmental factors influence population growth. Flow alteration has been linked to declines and extirpations in the Foothill Yellow-legged Frog (Rana boylii), a stream breeding amphibian native to California and Oregon. To date, no study has jointly analyzed abundance data from populations throughout the range of R. boylii in an MPVA model. We compiled time series of egg mass counts (an index of adult female abundance) from R. boylii populations in 36 focal streams and fit an MPVA model to quantify how streamflow metrics, stream temperature, and surrounding land cover affect population growth. We found population growth was positively related to stream temperature and was higher in the years following a wet year with high total annual streamflow. Density dependence was weakest (i.e., carrying capacity was highest) for streams with high seasonality of streamflow and intermediate rates of change in streamflow during spring. Our results highlight how altered streamflow can further increase the risk of decline for R. boylii populations. Managing stream conditions to better match natural flow and thermal regimes would benefit the conservation of R. boylii populations.},

keywords = {amphibian declines, amphibian populations, amphibians, Foothill yellow‐legged frog, population structure, stream ecosystems},

pubstate = {published},

tppubtype = {article}

}

@article{Dralle2023b,

title = {Inferring hillslope groundwater recharge ratios from the storage-discharge relation},

author = {DN Dralle and WJ Hahm and DM Rempe},

doi = {https://doi.org/10.1029/2023GL104255},

year  = {2023},

date = {2023-07-25},

urldate = {2023-07-25},

journal = {Geophysical Research Letters},

abstract = {Accurate observation of hillslope groundwater storage and instantaneous recharge remains difficult due to limited monitoring and the complexity of mountainous landscapes. We introduce a novel storage-discharge method to estimate hillslope recharge and the recharge ratio---the fraction of precipitation that recharges groundwater. The method, which relies on streamflow data, is corroborated by independent measurements of water storage dynamics inside the Rivendell experimental hillslope at the Eel River Critical Zone Observatory, California USA. We find that along-hillslope patterns in bedrock weathering and plant-driven storage dynamics govern the seasonal evolution of recharge ratios. Thinner weathering profiles and smaller root-zone storage deficits near-channel are replenished before larger ridge-top deficits. Consequently, precipitation progressively activates groundwater from channel to divide, with an attendant increase in recharge ratios throughout the wet season. Our novel approach and process observations offer valuable insights into controls on groundwater recharge, enhancing our understanding of a critical flux in the hydrologic cycle.},

keywords = {ERCZO, groundwater, hillslope},

pubstate = {published},

tppubtype = {article}

}

@article{Hudson-Rasmussen2022,

title = {Mapping variations in bedrock weathering with slope aspect under a sedimentary ridge-valley system using near-surface geophysics and drilling},

author = {B Hudson-Rasmussen and MH Huang and WJ Hahm and D Rempe and DN Dralle},

doi = {https://doi.org/10.1029/2023JF007254},

year  = {2023},

date = {2023-06-26},

urldate = {2023-06-19},

journal = {ESSOAr},

keywords = {bedrock weathering, ERCZO, hillslopes, Mapping},

pubstate = {published},

tppubtype = {article}

}

@article{Tune2023,

title = {Deep root activity overprints weathering of petrogenic organic carbon in shale},

author = {AK Tune and JL Druhan and CR Lawrence and DM Rempe},

editor = {A Jacobson},

doi = {https://doi.org/10.1016/j.epsl.2023.118048},

year  = {2023},

date = {2023-04-01},

urldate = {2023-04-01},

journal = {Earth and Planetary Science Letters},

volume = {607},

number = {118048},

keywords = {ERCZO, root zone, Weathering},

pubstate = {published},

tppubtype = {article}

}

@article{Dralle2023,

title = {The salmonid and the subsurface: Hillslope storage capacity determines the quality and distribution of fish habitat},

author = {DN Dralle and G Rossi and PB Georgakakos and WJ Hahm and DM Rempe and M Blanchard and ME Power and WE Dietrich and SM Carlson},

doi = {https://doi.org/10.1002/ecs2.4436},

year  = {2023},

date = {2023-02-21},

journal = {Ecosphere},

volume = {14},

issue = {2},

keywords = {ERCZO},

pubstate = {published},

tppubtype = {article}

}

@article{Hill2022,

title = {Direct and indirect interactions of spiders, herbivorous insects, and native plants in native perennial vs exotic annual grass patches},

author = {K Hill and ME Power},

year  = {2022},

date = {2022-12-31},

urldate = {2022-12-31},

journal = {Ecology},

keywords = {ecology, ERCZO, exotic plants, grasses, spiders},

pubstate = {published},

tppubtype = {article}

}

@article{Golla2022,

title = {Subsurface weathering signatures in stream chemistry during an intense storm},

author = {JK Golla and J Bouchez and ML Kuessner and DM Rempe and JL Druhan},

url = {https://angelo.berkeley.edu/golla_subsurface_weathering/},

doi = {https://doi.org/10.1016/j.epsl.2022.117773},

year  = {2022},

date = {2022-10-01},

urldate = {2022-10-01},

journal = {Earth and Planetary Science Letters},

volume = {595},

keywords = {bedrock weathering, ERCZO, hydrochemistry, streams},

pubstate = {published},

tppubtype = {article}

}

@article{Rossi2022,

title = {Seasonal growth potential of Oncorhynchus mykiss in streams with contrasting prey phenology and streamflow},

author = {G Rossi and ME Power and SM Carlson and TE Grantham},

url = {https://angelo.berkeley.edu/ecs24211/},

doi = {https://doi.org/10.1002/ecs2.4211},

year  = {2022},

date = {2022-06-16},

urldate = {2022-06-16},

journal = {Ecosphere},

keywords = {ERCZO, predator-prey dynamics, steelhead/rainbow trout, streams},

pubstate = {published},

tppubtype = {article}

}

@article{Hahm2022,

title = {Bedrock vadose zone storage dynamics under extreme drought: consequences for plant water availability, recharge, and runoff},

author = {WJ Hahm and DN Dralle and M Sanders and AB Bryk and KE Fauria and MH Huang and B Hudson-Rasmussen and MD Nelson and MA Pedrazas and L Schmidt and et al.},

url = {https://angelo.berkeley.edu/hahm_bedrock_vadose_storage/},

doi = {https://doi.org/10.1029/2021WR031781},

year  = {2022},

date = {2022-04-08},

urldate = {2022-04-08},

journal = {Water Resources Research},

volume = {58},

issue = {4},

keywords = {bedrock, Drought, ERCZO, water storage},

pubstate = {published},

tppubtype = {article}

}

@article{Lapides2022b,

title = {Controls on stream water age in a saturation overland flow-dominated catchment},

author = {D Lapides and WJ Hahm and DM Rempe and WE Dietrich and DN Dralle

},

url = {https://angelo.berkeley.edu/lapides_streamwater_age-compressed/},

doi = {https://doi.org/10.1029/2021WR031665},

year  = {2022},

date = {2022-04-01},

journal = {Water Resources Research},

volume = {58},

issue = {4},

keywords = {catchment, ERCZO, stream flows},

pubstate = {published},

tppubtype = {article}

}

@article{LaFollette2022,

title = {Multicriteria analysis on rock moisture and streamflow in a rainfall-runoff model improves accuracy of model results},

author = {PT LaFollette and WJ Hahm and DM Rempe and WE Dietrich and CC Brauer and AH Weerts and DN Dralle },

url = {https://angelo.berkeley.edu/lafollette_rockmoisture_streamflow_model/},

doi = {https://doi.org/10.1002/hyp.14536},

year  = {2022},

date = {2022-03-09},

journal = {Hydrological Processes},

volume = {36},

issue = {3},

keywords = {ERCZO, hydrologic modeling, rainfall, rock moisture, Stream Flow},

pubstate = {published},

tppubtype = {article}

}

@article{Kupferberg2021,

title = {Rana Boylii (Foothill Yellow-legged Frog) Reproductive Behavior and Habitat Use},

author = {Sarah J. Kupferberg },

year  = {2021},

date = {2021-12-17},

urldate = {2021-12-17},

journal = {Herpetological Review},

volume = {52},

number = {4},

keywords = {natural history notes, Rana boylii},

pubstate = {published},

tppubtype = {article}

}

@article{Peek2021,

title = {Actinemys marmorata (northwestern pond turtle) feeding on Dicamptodon tenebrosus (coastal giant salamander)},

author = {RA Peek and SJ Kupferberg and A Catenazzi and PB Georgakakos and ME Power},

url = {https://angelo.berkeley.edu/peek_pondturtle_salamander/},

doi = {https://doi.org/10.1898/1051-1733-102.3.261},

year  = {2021},

date = {2021-11-26},

urldate = {2021-11-26},

journal = {Northwestern Naturalist},

volume = {102},

issue = {3},

keywords = {ecology, ERCZO},

pubstate = {published},

tppubtype = {article}

}

@article{Bouma-Gregson2021b,

title = {Microcoleus (Cyanobacteria) form watershed-wide populations without strong gradients in population structure},

author = {K Bouma-Gregson and A Crits-Christoph and MR Olm and ME Power and JF Banfield},

url = {https://angelo.berkeley.edu/bouma-gregson_microcoleus_cyanobacteria_populations-2/},

doi = {https://doi.org/10.1111/mec.16208},

year  = {2021},

date = {2021-10-04},

urldate = {2021-10-04},

journal = {Molecular Ecology},

volume = {31},

pages = {86-103},

keywords = {cyanobacteria, ERCZO, population ecology, population structure},

pubstate = {published},

tppubtype = {article}

}

@article{McCormick2021,

title = {Evidence for widespread woody plant use of water stored in bedrock},

author = {E. McCormick and D.N. Dralle and W.J. Hahm and A.K. Tune and L.M. Schmidt and K.D. Chadwick and D.M. Rempe},

doi = {https://doi.org/10.1038/s41586-021-03761-3},

year  = {2021},

date = {2021-09-08},

urldate = {2021-01-14},

journal = {Nature},

abstract = {Woody plant transpiration is a major control on Earth’s climate system, streamflow, and human water supply. Soils are widely considered to be the primary reservoir of water for woody plants, however, plants also access water stored in the fractures and pores of bedrock, either as rock moisture (water stored in the unsaturated zone) (Schwinning, 2010) or bedrock groundwater (below the water table) (Miller et al., 2010). Bedrock as a water source for plants has not been evaluated over large scales, and consequently, its importance to terrestrial water and carbon cycling is poorly known (Fan et al., 2019). Here, we show that woody plants routinely access significant quantities of water stored in bedrock —commonly as rock moisture —for transpiration across diverse climates and biomes. For example, in California, the volume of bedrock water transpired by woody vegetation annually exceeds that stored in man-made reservoirs, and woody vegetation that withdraws bedrock water accounts for over 50% of the aboveground carbon stocks in the state. Our findings show that bedrock water storage dynamics are a critical element of terrestrial water cycling and therefore necessary to capture the effect of shifting climate on woody ecosystems, above- and belowground carbon storage, and water resources.},

keywords = {bedrock water, ERCZO, root zone, transpiration, woody plants},

pubstate = {published},

tppubtype = {article}

}

@article{Debray2021,

title = {Priority effects in microbiome assembly},

author = {R Debray and R Herbert and A Jaffe and A Crits-Christoph and ME Power and B Koskella},

url = {https://angelo.berkeley.edu/debray_priority_effects_microbiome/},

doi = {https://doi.org/10.1038/s41579-021-00604-w },

year  = {2021},

date = {2021-08-27},

urldate = {2021-08-27},

journal = {Nature Reviews Microbiology},

keywords = {ERCZO, microbial communities},

pubstate = {published},

tppubtype = {article}

}

@article{Olofsson2021,

title = {Cryptic constituents: The paradox of high flux – low concentration components in aquatic ecosystems.},

author = {M Olofsson and ME Power and DA Stahl and Y Vadeboncoeur and MT Brett},

doi = {https://doi.org/10.3390/w13162301},

year  = {2021},

date = {2021-08-22},

urldate = {2021-08-22},

journal = {Water},

volume = {13},

issue = {16},

keywords = {aquatic ecosystems},

pubstate = {published},

tppubtype = {article}

}

@article{Golla2021,

title = {The evolution of lithium isotope signatures in fluids draining actively weathering hillslopes},

author = {J.K. Golla and M.L. Kuessner and M.J. Henehan and J. Bouchez and D.M. Rempe and J.L. Druhan},

doi = {10.1016/j.epsl.2021.116988},

year  = {2021},

date = {2021-08-01},

journal = {Earth and Planetary Science Letters},

volume = {567},

number = {1},

abstract = {The stable isotopes of lithium (Li) serve as a robust proxy of silicate weathering. The fate and transport of these isotopes in the dissolved load of major rivers have been characterized to infer changes in both contemporary weathering regimes and paleo-conditions. In this contribution, we deconvolve this integrated signal into the individual processes that fractionate Li at the inception of silicate weathering by directly measuring Li isotope ratios of waters (Li) transiting through a rapidly eroding first-order hillslope. We use these data to develop a multicomponent reactive transport framework, which shows that net dissolution of weathered material generates light Li signatures (as low as −9.2‰) in the shallow portion of the vadose zone. An increase in Li deeper into the vadose zone (as much as +18‰) reflects an increasing contribution of secondary mineral formation. Below the water table, congruent weathering occurs and imparts elevated cation concentrations and bedrock Li. Silicate weathering continues within the saturated zone as groundwater travels downslope (Li = +13 to + 24‰) to the stream. The stream signatures (Li = +28 to +29‰) reflect the terminus of this network of silicate weathering reactions and the relative magnitude of each contributing process (e.g., transitions in secondary mineral formation, dissolution of weathered material). We show that fluid progressing through the weathering profile of this first-order hillslope is distinguished by a sequence of characteristic Li isotope signatures, which can be reproduced in a forward, process-based model framework. This model development offers an improved quantitative basis for the use of metal(loid) stable isotopes in disentangling catchment-scale chemical weathering fluxes.



},

keywords = {Critical Zone, ERCZO, lithium isotopes, reactive transport, silicate weathering},

pubstate = {published},

tppubtype = {article}

}

@article{Muller2021,

title = {Catchment processes can amplify the effect of increasing rainfall variability},

author = {M.F. Muller and K.R. Roche and D.N. Dralle},

doi = {https://doi.org/10.1088/1748-9326/ac153e},

year  = {2021},

date = {2021-07-29},

urldate = {2021-07-29},

journal = {Environmental Research Letters},

volume = {16},

number = {8},

abstract = {By filtering the incoming climate signal when producing streamflow, river basins can attenuate—or amplify—projected increases in rainfall variability. A common perception is that river systems dampen rainfall variability by averaging spatial and temporal variations in their watersheds. However, by analyzing 671 watersheds throughout the United States, we find that many catchments actually amplify the coefficient of variation of rainfall, and that these catchments also likely amplify changes in rainfall variability. Based on catchment-scale water balance principles, we relate that faculty to the interplay between two fundamental hydrological processes: water uptake by vegetation and the storage and subsequent release of water as discharge. By increasing plant water uptake, warmer temperatures might exacerbate the amplifying effect of catchments. More variable precipitations associated with a warmer climate are therefore expected to lead to even more variable river flows—a significant potential challenge for river transportation, ecosystem sustainability and water supply reliability.},

keywords = {climate change, ERCZO, rainfall, Stream Flow, water resources},

pubstate = {published},

tppubtype = {article}

}

@article{Vadeboncoeur2021b,

title = {Blue Waters, Green Bottoms: Benthic Filamentous Algal Blooms (FABs) are an Emerging Threat to Clear Lakes Worldwide},

author = {Y Vadeboncoeur and MV Moore and SD Stewart and S Chandra and KS Atkins and JS Baron and K Bouma-Gregson and S Brothers and SN Francoeur and L Genzoli and SN Higgins and S Hilt and LR Katona and D Kelly and IA Oleksy and T Ozersky and ME Power and D Roberts and AP Smits and O Timoshkin and F Tromboni and MJ Vander Zanden and EA Volkova and AS Waters and SA Wood and M Yamamuro },

url = {https://angelo.berkeley.edu/vadebonceour_algal_blooms/},

doi = {https://doi.org/10.1093/biosci/biab049},

year  = {2021},

date = {2021-07-27},

urldate = {2021-07-27},

journal = {BioScience},

volume = {71},

keywords = {algal blooms, benthic, ERCZO, lakes},

pubstate = {published},

tppubtype = {article}

}

@article{Vadeboncoeur2021,

title = {Blue Waters, Green Bottoms: Benthic Filamentous Algal Blooms Are an Emerging Threat to Clear Lakes Worldwide},

author = {Yvonne Vadeboncoeur and Marianne V Moore and Simon D Stewart and Sudeep Chandra and Karen S Atkins and Jill S Baron and Keith Bouma-Gregson and Soren Brothers and Steven N Francoeur and Laurel Genzoli and Scott N Higgins and Sabine Hilt and Leon R Katona and David Kelly and Isabella A Oleksy and Ted Ozersky and Mary E Power and Derek Roberts and Adrianne P Smits and Oleg Timoshkin and Flavia Tromboni and M Jake Vander Zanden and Ekaterina A Volkova and Sean Waters and Susanna A Wood and Masumi Yamamuro},

url = {https://angelo.berkeley.edu/biab049-2/},

doi = {10.1093/biosci/biab049},

year  = {2021},

date = {2021-07-07},

journal = {BioScience},

volume = {71},

number = {10},

pages = {1011–1027},

abstract = {Nearshore (littoral) habitats of clear lakes with high water quality are increasingly experiencing unexplained proliferations of filamentous algae that grow on submerged surfaces. These filamentous algal blooms (FABs) are sometimes associated with nutrient pollution in groundwater, but complex changes in climate, nutrient transport, lake hydrodynamics, and food web structure may also facilitate this emerging threat to clear lakes. A coordinated effort among members of the public, managers, and scientists is needed to document the occurrence of FABs, to standardize methods for measuring their severity, to adapt existing data collection networks to include nearshore habitats, and to mitigate and reverse this profound structural change in lake ecosystems. Current models of lake eutrophication do not explain this littoral greening. However, a cohesive response to it is essential for protecting some of the world's most valued lakes and the flora, fauna, and ecosystem services they sustain.},

keywords = {attached filamentous algae, ERCZO, eutrophication, global change, littoral, periphyton},

pubstate = {published},

tppubtype = {article}

}

@article{Dralle2021,

title = {Technical note: Accounting for snow in the estimation of root zone water storage capacity from precipitation and evapotranspiration fluxes},

author = {D.N. Dralle and W.J. Hahm and K.D. Chadwick and E. McCormick and D.M. Rempe},

doi = {10.5194/hess-25-2861-2021},

year  = {2021},

date = {2021-05-27},

journal = {Hydrology and Earth System Sciences},

volume = {25},

number = {5},

pages = {2861–2867},

abstract = {A common parameter in hydrological modeling frameworks is root zone water storage capacity (SR[L]), which mediates plant water availability during dry periods as well as the partitioning of rainfall between runoff and evapotranspiration. Recently, a simple flux-tracking-based approach was introduced to estimate the value of SR (Wang-Erlandsson et al., 2016). Here, we build upon this original method, which we argue may overestimate SR in snow-dominated catchments due to snow melt and evaporation processes. We propose a simple extension to the method presented by Wang-Erlandsson et al. (2016) and show that the approach provides a lower estimate of SR in snow-dominated watersheds. This SR dataset is available at a 1 km resolution for the continental USA, along with the full analysis code, on the Google Colab and Earth Engine platforms. We highlight differences between the original and new methods across the rain–snow transition in the Southern Sierra Nevada, California, USA. As climate warms and precipitation increasingly arrives as rain instead of snow, the subsurface may be an increasingly important reservoir for storing plant-available water between wet and dry seasons; therefore, improved estimates of SR will better clarify the future role of the subsurface as a storage reservoir that can sustain forests during seasonal dry periods and episodic drought.},

keywords = {ERCZO, evapotranspiration, hydrologic modeling, root zone, snow melt, water storage},

pubstate = {published},

tppubtype = {article}

}

@article{Hood2021,

title = {Longitudinal patterns and linkages in benthic fine particulate organic matter composition, respiration, and nutrient uptake},

author = {James M. Hood and Lyndsie M. Collis and John D. Schade and Rebecca A. Stark and Jacques C. Finlay },

url = {https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.11781},

doi = {10.1002/lno.11781},

year  = {2021},

date = {2021-05-01},

journal = {Limnology and Oceanography},

abstract = {Longitudinal changes in the structure and function of river ecosystems have long been recognized, yet our understanding of how such patterns shape elemental cycles remains limited. In particular, while benthic fine particulate organic matter (POM, 0.7–1000 μm) may control many stream nutrient cycles, less is known about longitudinal patterns or controls of benthic POM‐associated nutrient uptake. We conducted a survey of benthic POM‐associated respiration and nutrient uptake as well as microbial biomass (bacteria and algae) and benthic POM composition in four size classes (0.7–53 μm, 53–106 μm, 106–250 μm, and 250–1000 μm) in six streams in the forested South Fork Eel River watershed (California), encompassing a longitudinal gradient in light availability and primary production. Benthic POM at downstream sites was composed of smaller particles with lower organic matter content that were richer in nitrogen and autotrophic material. Areal respiration and nutrient uptake rates increased 11‐ to 67‐fold with stream size. While microbial activity rates did not increase with stream size, benthic POM‐associated microbial biomass increased 20‐fold with stream size, and closely tracked a 15‐fold increase in light availability, and primary production. Thus, microbial biomass, not activity, determined longitudinal patterns in benthic POM‐associated areal nutrient uptake and respiration rates. We attribute longitudinal patterns in microbial biomass to increases in light availability and primary production. Our findings help clarify the role of local (primary production) and upstream processes in shaping ecosystem structure and function.},

keywords = {benthic, fine particulate organic matter, microbial biomass, Nutrient Cycling, Stream Ecology},

pubstate = {published},

tppubtype = {article}

}