A global assessment of environmental and climate influences on wetland macroinvertebrate community structure and function

EPELE, LUIS B.; WILLIAMS-SUBIZA, EMILIO A.; BIRD, MATTHEW S.; BOISSEZON, AURELIE; BOIX, DANI; DEMIERRE, ELIANE; FAIR, CONOR; GARCÍA, PATRICIA E,; GASCÓN, STEPHANIE; GRECH, MARTA G.; GREIG, HAMISH S.; JEFFRIES, MICHAEL; KNEITEL, JAMIE M.; LOSKUTOVA, OLGA; MALTCHIK, LEONARDO; MANZO, LUZ M.; MATALONI, GABRIELA; MCLEAN, KYLE I.; MLAMBO, MUSA C.; OERTLI, BEAT; PIRES, MATEUS MARQUES; SALA, JORDI; SCHEIBLER, ERICA E.; STENERT, CRISTINA; WU, HAITAO; WISSINGER, SCOTT A.; BATZER, DAROLD P.

GLOBAL CHANGE BIOLOGY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2024

1354-1013

Estimating organisms´ responses to environmental variables and taxon associationsacross broad spatial scales is vital for predicting their responses to climate change.Macroinvertebrates play a major role in wetland processes, but studies simultaneously exploring both community structure and community trait responses to environmental gradients are still lacking. We compiled a global dataset (six continents)from 756 depressional wetlands, including the occurrence of 96 macroinvertebratefamilies, their phylogenetic tree, and 19 biological traits. Using Bayesian hierarchicaljoint species distribution models (JSDMs), we estimated macroinvertebrate associations and compared the influences of local and climatic predictors on both individualmacroinvertebrate families and their traits. While macroinvertebrate families weremainly related to broad-scale factors (maximum temperature and precipitation seasonality), macroinvertebrate traits were strongly related to local wetland hydroperiod. Interestingly, macroinvertebrate families and traits both showed positive andnegative associations to the same environmental variables. As expected, many macroinvertebrate family occurrences were positively associated with temperature, buta few showed the opposite pattern and were found in cooler or montane regions.We also found that wetland macroinvertebrate communities would likely be affectedby changing climates through alterations in traits related to precipitation seasonality, temperature seasonality, and wetland area. Temperature increases may negativelyaffect collector and shredder functional groups. A decrease in precipitation couldlead to reductions in wetland area benefiting drought-tolerant macroinvertebrates,but it may negatively affect macroinvertebrates lacking those adaptations