Implications of species addition and decline for nutrient dynamics in fresh waters

Capps, Krista A.; Atkinson, Carla L.; Rugenski, Amanda T.

doi:10.1086/681095

Cited by 28 publications

(20 citation statements)

References 59 publications

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“…Much empirical work on this topic has been conducted in tropical streams, where grazers can substantially affect aquatic ecosystems through their feeding, recycling, and storage of nutrients (e.g., Taylor et al, 2006;McIntyre et al, 2008;Capps and Flecker, 2013). However, these consumer-mediated impacts are sensitive to changes in the biological community (Capps et al, 2015a). Throughout the neotropics, for example, the species richness and biomass of stream-dwelling amphibians have been drastically reduced by disease-driven amphibian declines, particularly in cooler highland streams (Lips, 1999).…”

Section: Introductionmentioning

confidence: 99%

Does the Growth Rate Hypothesis Apply across Temperatures? Variation in the Growth Rate and Body Phosphorus of Neotropical Benthic Grazers

Moody

Rugenski

Sabo

et al. 2017

Front. Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Does the Growth Rate Hypothesis Apply across Temperatures? Variation in the Growth Rate and Body Phosphorus of Neotropical Benthic Grazers

Moody

Rugenski

Sabo

et al. 2017

Front. Environ. Sci.

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“…Many of the study sites experienced pronounced wet and dry seasons, and the authors discussed the impact of this seasonality on the functional role of aquatic organisms in nutrient dynamics (e.g., Atkinson & Vaughn, ; Rantala et al ., ). Additionally, this special issue emphasises the importance of using long‐term data sets to document interannual variability in the flux of elements and the ecosystem response to CND in fresh waters (Capps et al ., ; Rantala et al ., ; Subalusky et al ., ).…”

Section: Themes In This Special Issuementioning

confidence: 97%

Consumer‐driven nutrient dynamics in freshwater ecosystems: an introduction

2015

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Summary Over the past decade, studies of the effects of consumer‐driven nutrient dynamics have become more common. This work has demonstrated that animals can function as sources and sinks of elements, but few studies have broadly compared these processes among organisms and across ecosystems. Collectively, the articles in this special issue elucidate the important roles that organisms can play in nutrient dynamics in lotic, lentic and wetland ecosystems. These papers show how species‐specific traits, such as body stoichiometry and trophic ecology, and abiotic variables, including ambient water chemistry, govern the net impacts of consumer‐driven nutrient dynamics in freshwater ecosystems. Globally, the introduction of non‐native species and the loss of native biodiversity compromise the functional integrity of freshwater ecosystems. The work featured in this issue will help ecologists and conservation biologists integrate species‐specific traits with ecosystem‐specific conditions to understand the potential effects of changing biodiversity on ecosystem function in fresh waters.

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“…As a result, the effects of an individual species on the rates of one or more ecosystem processes (i.e., functional effects) may be an important reason to protect them from extinction. However, the functional effects of species loss are not well‐known for most freshwater and diadromous fish taxa (Capps, Atkinson, & Rugenski, ; Cucherousset & Olden, ). Identifying geographic and taxonomic gaps in our understanding of these connections is a priority for conservation scientists and managers who need to forecast ecosystem response to species loss and advocate for resources to protect freshwater and diadromous fish species.…”

Section: Introductionmentioning

confidence: 99%

“…are not well-known for most freshwater and diadromous fish taxa (Capps, Atkinson, & Rugenski, 2015;Cucherousset & Olden, 2011).…”

mentioning

confidence: 99%

“…Freshwater and diadromous fishes have a variety of important functional effects such as recycling limiting nutrients, moderating sedimentation rates, grazing on algae and aquatic vegetation, and modifying habitat structure to create biogeochemical hotspots (reviewed in Atkinson, Capps, Rugenski, & Vanni, 2017; Figure 1). As a result, the loss or decline of fish populations can have drastic effects on ecosystem function (Capps et al, 2015). However, freshwater and diadromous fishes are an extremely diverse group whose functional effects can vary greatly among families and populations (e.g., Vanni, Flecker, Hood, & Headworth, 2002;Bassar et al, 2010).…”

mentioning

confidence: 99%

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Taxonomic and geographic gaps in understanding the functional effects of imperilled fishes on freshwater ecosystems

et al. 2019

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The effects that fishes have on rates of one or more ecosystem processes (hereafter referred to as functional effects) are often invoked as an important reason for imperilled species conservation. However, the degree to which we understand these effects is rarely evaluated for most groups of fishes. We assessed how well the functional effects of freshwater and diadromous fishes, one of the most imperilled groups of animals, are quantified to date. We found that 88% of studies considering the functional effects of imperilled North American fishes were conducted on one family, Salmonidae. Studies of the functional effects of fishes were also concentrated in Pacific drainages of North America, with few studies in hotspots of imperilled fish diversity such as the Southeastern United States, the arid Southwest and central Mexico. Our results demonstrate the vast taxonomic and geographic gaps in our functional understanding of imperilled fishes and highlight the need to broaden this work to justify the argument that they are functionally important in the ecosystems they inhabit.

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Implications of species addition and decline for nutrient dynamics in fresh waters

Cited by 28 publications

References 59 publications

Does the Growth Rate Hypothesis Apply across Temperatures? Variation in the Growth Rate and Body Phosphorus of Neotropical Benthic Grazers

Does the Growth Rate Hypothesis Apply across Temperatures? Variation in the Growth Rate and Body Phosphorus of Neotropical Benthic Grazers

Consumer‐driven nutrient dynamics in freshwater ecosystems: an introduction

Taxonomic and geographic gaps in understanding the functional effects of imperilled fishes on freshwater ecosystems

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