Food webs
Aquatic food webs in mangrove and seagrass habitats of Centla Wetland, a Biosphere Reserve in Southeastern Mexico
... Aquatic food webs of Polo Stream and San Pedrito Lagoon both appear to utilize locally derived sources of primary production as principal carbon ...aquatic food webs when comparatively more ...
8
Global patterns in ecological indicators of marine food webs: a modelling approach.
... marine food web indicators Fishing is at present the main human factor that impacts marine food webs ...ecological food web indicators also varied among different exploitation levels in marine ...
21
Compilation and network analyses of cambrian food webs.
... about food webs—the networks of feeding relationships among species within ...detailed food-web data and analyses are lacking for ancient ecosystems, largely because of the low resolution of taxa ...
16
Googling food webs: can an eigenvector measure species' importance for coextinctions?
... in food webs according to their role in extinction ...the food webs we have analyzed are sampled in the field over time and space, it is most likely that the links included in the networks ...
6
Medium-sized exotic prey create novel food webs: the case of predators and scavengers consuming lagomorphs
... abundant food subsidy to the consumers (Grigera & Rapoport, 1983; Lees & Bell, ...Such food webs relying on one abundant resource are vulnerable to cascade effects when perturbed and have ...
15
INVESTIGAÇÃO SOBRE fishing down marine food webs NO SUL DO BRASIL: IMPLICAÇÕES FINANCEIRAS E PARA A SUSTENTABILIDADE
... A redução de safras de recursos base de cadeia indicaria que a pesca marinha no sul do Brasil corre em sentido contrário ao do efeito fishing down food webs, registrado noutras partes do mundo. Entretanto, ...
15
Food webs in the human body: linking ecological theory to viral dynamics.
... While an important trade-off between virulence and trans- mission is thoroughly explored in disease research [14], examples of empirical in-host trade-off studies are surprisingly few, and we know of only one such virus ...
11
Key features of intertidal food webs that support migratory shorebirds.
... A transfer efficiency between the level I+det and level II as high as estimated here (67% in winter and 83% in summer) is not common: the trophic efficiency in the literature tends to be lower than 50%, with a few ...
17
FORUM Interactions Mediated by Predators in Arthropod Food Webs
... of food webs in crops as well as in natural ecosystems. When food webs are disturbed by adding (the introduction of natural enemies) or removing species (through use of pesticides), as is the ...
9
Spatial differences in East scotia ridge hydrothermal vent food webs: influences of chemistry, microbiology and predation on trophodynamics.
... 24.6% to 0.8% at E2 and from 24.4% to 1.5% at E9. The lowest macroconsumer d 13 C was observed in peltospiroid gastropods (230.0% to 231.1%) and indicated carbon fixation via the Calvin-Benson-Bassham (CBB) cycle by ...
11
Isotopic niche variation in a higher trophic level ectotherm: highlighting the role of succulent plants in desert food webs.
... Isotopic signatures of primary producers are carried up to the highest levels in the food web with only minor changes. Thus, the geographic variation in the isotopic niche of generalist predators would reflect ...
17
REPOSITORIO INSTITUCIONAL DA UFOP: Scaling relations in food webs.
... in food webs 关4兴. These webs are diagrams showing the predation relationships among species in a com- ...the food web structure, such as the frac- tions of the species in the trophic levels ...
5
Estuarine consumers utilize marine, estuarine and terrestrial organic matter and provide connectivity among these food webs
... ine food webs, supporting up to 80% of invertebrates and fish biomass (Kasai & Nakata 2005, Hoffman et ...the food web and to the secondary production are still poorly ...
14
Sandy beaches: state of the art of nematode ecology
... In this review, we summarize existing knowledge of the ecology of sandy-beach nematodes, in relation to spatial distribution, food webs, pollution and climate change. We attempt to discuss spatial scale ...
19
Analyzing spatial patterns linked to the ecology of herbivores and their natural enemies in the soil
... Recent advances are showing the potential of belowground organisms to interact with aboveground food webs. In this regard, Pineda et al. (2013) have evaluated the mechanism involved in interactions between ...
18
A crab swarm at an ecological hotspot: patchiness and population density from AUV observations at a coastal, tropical seamount
... Allochthonous supply of biomass, where resources from one habitat or ecosystem subsidizes another system, influences local population community and dynamics (Polis, Anderson & Holt, 1997). Moreover, the episodic ...
23
Cephalopods as vectors of harmful algal bloom toxins : a toxicokinetic and ecophysiological approach
... namely PSTs and DA, either through dietary route or direct exposure to the dissolved toxin. These toxins were chosen since they represent the major neurotoxins produced by phytoplankton along the Portuguese coast (Vale ...
237
Protists and bacteria interactions in the presence of oil
... microbial food webs, and their phagotrophic activities release waste products into the environment, both as dissolved and particulate organic matter from the undigested components of prey bacteria (Nagata ...
10
Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country.
... The interaction strength between a consumer and its resources is one of the most fundamental properties shaping food webs [1,2]. Spatial variation in the strength of resource-consumer interactions can ...
8
When is an ecological network complex? Connectance drives degree distribution and emerging network properties
... of food webs (Williams & Martinez, 2000), which generates (directed) networks under rules representing hypothesized mechanisms of prey-selection in empirical ecosystems (Gravel et ...for food ...
11