Global change in the trophic functioning of marine food webs
نویسندگان
چکیده
منابع مشابه
Global change in the trophic functioning of marine food webs
The development of fisheries in the oceans, and other human drivers such as climate warming, have led to changes in species abundance, assemblages, trophic interactions, and ultimately in the functioning of marine food webs. Here, using a trophodynamic approach and global databases of catches and life history traits of marine species, we tested the hypothesis that anthropogenic ecological impac...
متن کاملRescaling the trophic structure of marine food webs
Measures of trophic position (TP) are critical for understanding food web interactions and human-mediated ecosystem disturbance. Nitrogen stable isotopes (δ(15) N) provide a powerful tool to estimate TP but are limited by a pragmatic assumption that isotope discrimination is constant (change in δ(15) N between predator and prey, Δ(15) N = 3.4‰), resulting in an additive framework that omits kno...
متن کاملMarine Plankton Food Webs and Climate Change
• Some plankton, such as diatoms, grow better at cooler temperatures. Warming may cause other, less palatable, species to replace them, depriving zooplankton and menhaden of their primary food source. • Because phytoplankton are linked to freshwater and nutrient inputs, draught will likely decrease their abundance. Also, when nutrients are reduced, smaller phytoplankton replace diatoms, and the...
متن کاملTrophic complementarity drives the biodiversity-ecosystem functioning relationship in food webs.
The biodiversity-ecosystem functioning (BEF) relationship is central in community ecology. Its drivers in competitive systems (sampling effect and functional complementarity) are intuitive and elegant, but we lack an integrative understanding of these drivers in complex ecosystems. Because networks encompass two key components of the BEF relationship (species richness and biomass flow), they pr...
متن کاملOcean Food Webs and Trophic Dynamics
Contents 1. Introduction 2. The pelagic food web 2.1 The structure of the pelagic food web. 2.2 Phytoplankton community structure. 2.2.1 Bottom up determinants of phytoplankton size structure. 2.2.2 Top-down determinants of phytoplankton size structure. 2.3 Zooplankton of marine pelagic food webs 2.3.1 Protozoa. 2.3.2 Copepoda. 2.3.3 Tunicata. 2.3.4 Mesozooplankton feeding selectivity. 2.3.5 He...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PLOS ONE
سال: 2017
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0182826