Charles P. Hawkins

Patterns and drivers of invertebrate assemblage condition in southern China’s fluvial ecosystems

Kai Chen, Yongde Cui, Robert M. Hughes, John R. Olson et autres

A Degenerate Primer Set for eDNA Metabarcoding of Freshwater Amphibians, Turtles and Fish

Torrey W. Rodgers, John R. Olson, Charles P. Hawkins, Karen E. Mock

ABSTRACT Metabarcoding of environmental DNA (eDNA) has revolutionized the detection of aquatic species across large geographic scales. However, the effectiveness of eDNA metabarcoding across taxa is marker‐dependent, often requiring multiple markers to detect divergent taxonomic groups. Here, we introduce a re‐designed metabarcoding …

us (code pays fourni par la source)

Sample count, method of predicting tolerance limits, and confounding among covariates affect species sensitivity distributions derived from survey data

Katlyn M. Stemmler, Charles P. Hawkins

Simplified random forest models predict reference-condition water chemistry as well as more complex models

Daniel Nelson, Jennifer Courtwright, Charles P. Hawkins

Predicting Road‐Crossing Passability for River Connectivity Analysis

Gregory C. Goodrum, Charles P. Hawkins, Timothy E. Walsworth, Sarah E. Null

ABSTRACT Road‐crossing structures limit organism movement, but their passabilities are rarely measured because they are numerous and time‐consuming to survey. Instead, road‐crossing passability could be treated in one of four ways: assuming equal passability at all locations (uniform method), assigning random passability …

us (code pays fourni par la source)

A novel degenerate primer set for eDNA metabarcoding of amphibians, turtles and fish

Torrey W. Rodgers, John R Olson, Charles P. Hawkins, Karen E. Mock

Abstract Metabarcoding of environmental DNA (eDNA) has revolutionized the detection of aquatic species across large geographic scales. However, the effectiveness of eDNA metabarcoding across taxa is marker-dependent, often requiring multiple markers to detect divergent taxonomic groups. Here, we introduce a novel metabarcoding …

us (code pays fourni par la source)

Assessing stream biological integrity across gradients of flow permanence and hydrologic connectivity

Jennifer Courtwright, Charles P. Hawkins

Ideally, stream bioassessment indices would be applicable, effective, and directly comparable across the full range of fluvial landscapes that occur within and across regions. However, few bioassessment indices exist for use in nonperennial streams, and those that have been used in nonperennial …

us (code pays fourni par la source)

Similarity of stream insect trait profiles across biogeographic regions

Stefan Kunz, Ben J. Kefford, Philippe Usseglio‐Polatera, Charles P. Hawkins et autres

Abstract Aim Habitat templet theory predicts that the functional niches of species evolved in response to selection pressures imposed by each species' spatial–temporal environment. Consequently, similar environmental conditions should lead to convergence in the biological trait composition of biogeographically independent assemblages. Given …

de, au, fr, us, Afrique du Sud, at, nz (code pays fourni par la source)

Understanding temporal variability across trophic levels and spatial scales in freshwater ecosystems

Tadeu Siqueira, Charles P. Hawkins, Julian D. Olden, Jonathan D. Tonkin et autres

A tenet of ecology is that temporal variability in ecological structure and processes tends to decrease with increasing spatial scales (from locales to regions) and levels of biological organization (from populations to communities). However, patterns in temporal variability across trophic levels and …

nz, br, us, es, fr, de, gb, fi, cz, ca, no (code pays fourni par la source)

Author response for "Similarity of stream insect trait profiles across biogeographic regions"

Stefan Kunz, Ben J. Kefford, Philippe Usseglio‐Polatera, Charles P. Hawkins et autres

Code and data: Understanding temporal variability across trophic levels and spatial scales in freshwater ecosystems

Tadeu Siqueira, Charles P. Hawkins, Julian D. Olden, Jonathan D. Tonkin et autres

Code and data to reproduce the results in Siqueira et al. (submitted) published as a Preprint (https://doi.org/10.32942/osf.io/mpf5x) The full set of results, including those made available as supplementary material, can be reproduced by running five scripts in the R_codes folder following this …

br, us, nz, es, fr, de, gb, fi, cz, ca, no (code pays fourni par la source)

Code and data: Understanding temporal variability across trophic levels and spatial scales in freshwater ecosystems

Tadeu Siqueira, Charles P. Hawkins, Julian D. Olden, Jonathan D. Tonkin et autres

Code and data to reproduce the results in Siqueira et al. (submitted) published as a Preprint (https://doi.org/10.32942/osf.io/mpf5x) The full set of results, including those made available as supplementary material, can be reproduced by running five scripts in the R_codes folder following this …

br, us, nz, es, fr, de, gb, fi, cz, ca, no (code pays fourni par la source)