Data from: Macroecological drivers of zooplankton communities across the mountains of western North America

• Main Authors: Loewen, Charlie J.G., Strecker, Angela L., Larson, Gary L., Vogel, Allan, Fischer, Janet M., Vinebrooke, Rolf D., Loewen, Charlie J. G.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Leptodiaptomus signicauda; Diaphanosoma birgei; Sida crystallina; Alona guttata; Macrocyclops albidus; Diacyclops thomasi; Epischura nevadensis; Alona affinis; Hesperodiaptomus kenai; Chydorus sphaericus; Alona rectangula; Hesperodiaptomus franciscanus; Aglaodiaptomus leptopus; Hesperodiaptomus arcticus; Bosmina longirostris; Ceriodaphnia reticulata; Mountain zooplankton; Microcyclops varicans; Eucyclops agilis; Daphnia dentifera; Holopedium gibberum; Bosmina hagmanni; Alona costata; Polyphemus pediculus; Daphnia longiremis; Alonella nana; Daphnia ambigua; Orthocyclops modestus; Leptodora kindtii; Bosmina coregoni; Daphnia pulex; Hesperodiaptomus shoshone; Simocephalus vetulus; Leptodiaptomus tyrrelli; Ceriodaphnia pulchella; Daphnia galeata; Cyclops scutifer; Skistodiaptomus oregonensis; Acanthocyclops vernalis; Leptodiaptomus sicilis; Heterocope septentrionalis; Leptodiaptomus nudus; Leptodiaptomus novamexicanus; Scapholeberis kingi; Ceriodaphnia quadrangula; Daphnia middendorffiana; Eurycercus lamellatus; Daphnia schodleri; Leptodiaptomus angustilobus; Zooplankton; Yukon
• Online Access: https://doi.org/10.5061/dryad.mr00v92

Disentangling the environmental and spatial drivers of biological communities across large scales increasingly challenges modern ecology in a rapidly changing world. Here, we investigate the hierarchical and trait-based organization of regional and local factors of zooplankton communities at a macroscale of 1,240 mountain lakes and ponds spanning western North America (California, USA, to Yukon Territory, Canada). Variation partitioning was used to test the hypothesized importance of climate, connectivity, catchment features, and exotic sportfish to zooplankton beta-diversity in the context of key functional traits (body size and reproductive dispersal potential) given the pronounced environmental heterogeneity (e.g. thermal gradients), topographic barriers, and legacy of stocked fish in mountainous regions. Dispersal limitation was inferred from multispecies patch connectivity estimates based on nearest and average distances to occupied patches. Environmental heterogeneity best explained community composition as catchment/lake features (morphometry, land cover, and lithology) collectively captured greater variation than did climate (temperature, precipitation, and solar radiation), local stocking, or connectivity; however, single climatic variables captured the most variation individually. Macrospatial variation by larger obligate sexual species was better explained than that by smaller cyclically parthenogenetic asexual species. Our results provide several novel insights into the macroecology of zooplankton of the North American Cordillera, demonstrating their stronger associations to climatically driven aquatic-terrestrial habitat coupling than dynamics arising from introduced salmonids, human land-use, or species dispersal. These findings highlight the clear and important role of these communities as bioindicators of the limnological impacts of accelerating rates of climate change, as their responses appear relatively not confounded by local human perturbations or dispersal limitation. Cumulative ...