DOI: 10.1016/j.ecolind.2020.106130
论文题名: Ecosystem-specific growth responses to climate pattern by a temperate freshwater fish
作者: Spurgeon J.J. ; Pegg M.A. ; Pope K.L. ; Xie L.
刊名: Ecological Indicators
ISSN: 1470160X
出版年: 2020
卷: 112 语种: 英语
英文关键词: Channel catfish
; Climate
; Fish growth
; Freshwater ecology
; Growing-degree-days
; Mixed models
Scopus关键词: Climate change
; Ecosystems
; Fish
; Flood control
; Information theory
; Population statistics
; Reservoirs (water)
; Water
; Channel catfish
; Climate
; Climate-growth relations
; Growing degree days
; Information-theoretic approach
; Limited information
; Mixed models
; Temperature tolerance
; Climate models
; climate effect
; dietary intake
; ecosystem function
; fish
; freshwater environment
; growth response
; prediction
; river channel
; temperate environment
; temperature tolerance
; Nebraska
; United States
; Animalia
; Ictalurus punctatus
; Pisces
英文摘要: Somatic growth patterns among animal populations are maintained through complex processes that vary among ecosystems. Changes in growth patterns may be concomitant with changes in climate; however, understanding how growth will manifest among ecosystems is limited. Information embedded within fish hard-parts (i.e., otoliths, spines, vertebrae) can account for variation in growth patterns resulting from changing climate conditions. Channel catfish Ictalurus punctatus is a freshwater fish species widely distributed across North America with limited information regarding climate influences on growth and differences in climate-growth relations among ecological systems. We assessed growth (total length) response to changing climate conditions for channel catfish among three waterbody types—pit lakes, irrigation and power-generation reservoirs, and flood-control reservoirs in Nebraska, USA. We used linear mixed-effect models and an information theoretic approach to assess the relative strengths among competing hypotheses. The most supported linear mixed-effect model of channel catfish growth was a function of fish age and an interaction between waterbody type and growing-degree-day (GDD). A positive trend existed in GDD from 1990 through 2008 whereby the predicted increase in GDD among waterbody types ranged from 182 GDD to 189 GDD. The predicted change in channel catfish growth resulting from increased GDD ranged from 1% to 39% among waterbody types. Channel catfish population rate functions, thus, may not respond similarly to climate conditions across ecosystem types. Changes in climate variables may contribute to system-specific responses in population dynamics for channel catfish as well as other similar freshwater species. The establishment of relations between climate and growth variables for a freshwater generalist with a plastic diet and broad temperature tolerance serves as an indication of the breadth of responses possible for freshwater fishes under global changes in climate conditions. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158278
Appears in Collections: 气候变化与战略
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作者单位: University of Arkansas at Pine Bluff, School of Agriculture, Fisheries, and Human Sciences, Pine Bluff, AR, United States; University of Nebraska-Lincoln, School of Natural Resources, Lincoln, NE, United States; U.S. Geological Survey—Nebraska Cooperative Fish and Wildlife Research Unit, and University of Nebraska-Lincoln, School of Natural Resources, Lincoln, NE, United States
Recommended Citation:
Spurgeon J.J.,Pegg M.A.,Pope K.L.,et al. Ecosystem-specific growth responses to climate pattern by a temperate freshwater fish[J]. Ecological Indicators,2020-01-01,112