Biogeochemistry and the structure of tropical brown food webs

被引:106
|
作者
Kaspari, Michael [1 ,2 ]
Yanoviak, Stephen P. [3 ,4 ]
机构
[1] Univ Oklahoma, Dept Zool, Grad Program Ecol & Evolutionary Biol, Norman, OK 73019 USA
[2] Smithsonian Trop Res Inst, Balboa, Panama
[3] Univ Texas Med Branch, Dept Pathol, Galveston, TX 77555 USA
[4] Univ Arkansas, Dept Biol, Little Rock, AR 72204 USA
基金
美国国家科学基金会;
关键词
calcium; decomposition; ecosystem size; invertebrates; litter; nitrogen; phosphorus; stoichiometry; trophic structure; tropical forests; BOTTOM-UP; DECOMPOSITION; LITTER; FOREST; PHOSPHORUS; COMMUNITY; STOICHIOMETRY; AVAILABILITY; MANIPULATION; COLLEMBOLA;
D O I
10.1890/08-1795.1
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Litter invertebrates are notoriously patchy at small scales. Here we show that the abundance of 10 litter taxa also varies 100-fold at landscape and regional scales across 26 forest stands in Peru and Panama. We contrast three hypotheses that link gradients of abundance to ecosystem biogeochemistry. Of 14 factors considered (12 chemical elements, plus fiber and litter depth), four best predicted the abundance of litter invertebrates. In the Secondary Productivity Hypothesis, phosphorus limits abundance via the conversion of detritus to microbial biomass. Two of four microbivore taxa, collembola and isopods, increased with the percentage of P (%P) of decomposing litter. However, percentage of S (correlated with %P) best predicted the abundance of collembola, oribatids, and diplopods (r(2) = 0.38, 0.33, 0.21, respectively). In the Structural Elements Hypotheses, N and Ca limit the abundance of silk-spinning and calcareous taxa, respectively. Mesostigmatids, pseudoscorpions, and spiders, all known to make silk, each increased with percentage of N of litter (r(2) = 0.22, 0.31, 0.26, respectively). Calcareous isopods, but not diplopods, increased with percentage of Ca of litter (r(2) = 0.59). In the Ecosystem Size Hypothesis, top predators are limited by available space. The abundance of the three remaining predators, chilopods, staphylinids, and ants, increased with litter depth (r(2) = 0.31, 0.74, 0.69, respectively), and food webs from forests with deeper litter supported a higher ratio of predators to microbivores. These results suggest that biogeochemical gradients can provide a mechanism, through stoichiometry and trophic theory, shaping the geography of community structure.
引用
下载
收藏
页码:3342 / 3351
页数:10
相关论文
共 50 条
  • [41] Allochthonous and autochthonous carbon flows in food webs of tropical forest streams
    Neres-Lima, Vinicius
    Machado-Silva, Fausto
    Baptista, Darcilio F.
    Oliveira, Renata B. S.
    Andrade, Pedro M.
    Oliveira, Andrea F.
    Sasada-Sato, Cristiano Y.
    Silva-Junior, Eduardo F.
    Feijo-Lima, Rafael
    Angelini, Ronaldo
    Camargo, Plinio B.
    Moulton, Timothy P.
    FRESHWATER BIOLOGY, 2017, 62 (06) : 1012 - 1023
  • [42] Trophic relationships and mercury biomagnification in Brazilian tropical coastal food webs
    Bisi, Tatiana Lemos
    Lepoint, Gilles
    Azevedo, Alexandre de Freitas
    Dorneles, Paulo Renato
    Flache, Leonardo
    Das, Krishna
    Malm, Olaf
    Lailson-Brito, Jose
    ECOLOGICAL INDICATORS, 2012, 18 : 291 - 302
  • [43] Effects of sediment pollution on food webs in a tropical river (Borneo, Indonesia)
    Yule, Catherine M.
    Boyero, Luz
    Marchant, Richard
    MARINE AND FRESHWATER RESEARCH, 2010, 61 (02) : 204 - 213
  • [44] Linking the green and brown worlds: the prevalence and effect of multichannel feeding in food webs
    Wolkovich, Elizabeth M.
    Allesina, Stefano
    Cottingham, Kathryn L.
    Moore, John C.
    Sandin, Stuart A.
    de Mazancourt, Claire
    ECOLOGY, 2014, 95 (12) : 3376 - 3386
  • [45] The coordination of green-brown food webs and their disruption by anthropogenic nutrient inputs
    Zelnik, Yuval R.
    Manzoni, Stefano
    Bommarco, Riccardo
    GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2022, 31 (11): : 2270 - 2280
  • [46] Consequences of adaptive behaviour for the structure and dynamics of food webs
    Valdovinos, Fernanda S.
    Ramos-Jiliberto, Rodrigo
    Garay-Narvaez, Leslie
    Urbani, Pasquinell
    Dunne, Jennifer A.
    ECOLOGY LETTERS, 2010, 13 (12) : 1546 - 1559
  • [47] Drought alters the structure and functioning of complex food webs
    Ledger M.E.
    Brown L.E.
    Edwards F.K.
    Milner A.M.
    Woodward G.
    Nature Climate Change, 2013, 3 (3) : 223 - 227
  • [48] ABIOTIC CONTROLS ON THE FUNCTIONAL STRUCTURE OF SOIL FOOD WEBS
    WHITFORD, WG
    BIOLOGY AND FERTILITY OF SOILS, 1989, 8 (01) : 1 - 6
  • [49] Status and trends in the structure of Arctic benthic food webs
    Kedra, Monika
    Moritz, Charlotte
    Choy, Emily S.
    David, Carmen
    Degen, Renate
    Duerksen, Steven
    Ellingsen, Ingrid
    Gorska, Barbara
    Grebmeier, Jacqueline M.
    Kirievskaya, Dubrava
    van Oevelen, Dick
    Piwosz, Kasia
    Samuelsen, Annette
    Weslawski, Jan Marcin
    POLAR RESEARCH, 2015, 34
  • [50] Drought alters the structure and functioning of complex food webs
    Ledger, Mark E.
    Brown, Lee E.
    Edwards, Francois K.
    Milner, Alexander M.
    Woodward, Guy
    NATURE CLIMATE CHANGE, 2013, 3 (03) : 223 - 227