Boyero Luz, Pérez Javier, López-Rojo Naiara, Tonin Alan M, Correa-Araneda Francisco, Pearson Richard G, Bosch Jaime, Albariño Ricardo J, Anbalagan Sankarappan, Barmuta Leon A, Beesley Leah, Burdon Francis J, Caliman Adriano, Callisto Marcos, Campbell Ian C, Cardinale Bradley J, Casas J Jesús, Chará-Serna Ana M, Ciapała Szymon, Chauvet Eric, Colón-Gaud Checo, Cornejo Aydeé, Davis Aaron M, Degebrodt Monika, Dias Emerson S, Díaz María E, Douglas Michael M, Elosegi Arturo, Encalada Andrea C, de Eyto Elvira, Figueroa Ricardo, Flecker Alexander S, Fleituch Tadeusz, Frainer André, França Juliana S, García Erica A, García Gabriela, García Pavel, Gessner Mark O, Giller Paul S, Gómez Jesús E, Gómez Sergio, Gonçalves Jose F, Graça Manuel A S, Hall Robert O, Hamada Neusa, Hepp Luiz U, Hui Cang, Imazawa Daichi, Iwata Tomoya, Junior Edson S A, Kariuki Samuel, Landeira-Dabarca Andrea, Leal María, Lehosmaa Kaisa, M'Erimba Charles, Marchant Richard, Martins Renato T, Masese Frank O, Camden Megan, McKie Brendan G, Medeiros Adriana O, Middleton Jen A, Muotka Timo, Negishi Junjiro N, Pozo Jesús, Ramírez Alonso, Rezende Renan S, Richardson John S, Rincón José, Rubio-Ríos Juan, Serrano Claudia, Shaffer Angela R, Sheldon Fran, Swan Christopher M, Tenkiano Nathalie S D, Tiegs Scott D, Tolod Janine R, Vernasky Michael, Watson Anne, Yegon Mourine J, Yule Catherine M
Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain.
IKERBASQUE, Bilbao, Spain.
Sci Adv. 2021 Mar 26;7(13). doi: 10.1126/sciadv.abe7860. Print 2021 Mar.
Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low and high functional diversity in 40 streams on 6 continents and spanning 113° of latitude. Despite important variability in our dataset, we found latitudinal differences in the effect of litter functional diversity on decomposition, which we explained as evolutionary adaptations of litter-consuming detritivores to resource availability. Specifically, a balanced diet effect appears to operate at lower latitudes versus a resource concentration effect at higher latitudes. The latitudinal pattern indicates that loss of plant functional diversity will have different consequences on carbon fluxes across the globe, with greater repercussions likely at low latitudes.
流水通过水生微生物和碎屑食性动物对陆地植物凋落物的分解，对全球碳通量有重大贡献。这种凋落物的多样性可能以尚未被理解的方式影响全球范围内的河流分解。我们调查了六大洲40条溪流中低功能多样性和高功能多样性凋落物混合物分解的纬度差异，这些溪流跨越了113°的纬度。尽管我们的数据集中存在重要的变异性，但我们发现凋落物功能多样性对分解的影响存在纬度差异，我们将其解释为碎屑食性动物对资源可用性的进化适应。具体而言，在低纬度地区似乎存在平衡饮食效应，而在高纬度地区则存在资源集中效应。这种纬度模式表明，植物功能多样性的丧失将对全球碳通量产生不同的影响，在低纬度地区可能产生更大的影响。
