scholarly journals TEST OF THE ISLAND BIOGEOGRAPHY THEORY WITH BOULDERS IN A SEAGRASS BED

2020 ◽  
Vol 26 (1) ◽  
pp. 131-134
Author(s):  
Ana Maria del Pilar Rincon ◽  
Valentina Gomez ◽  
Camilo B. Garcia
Keyword(s):  
Species Richness ◽  
Statistical Models ◽  
Island Biogeography ◽  
Seagrass Bed ◽  
Island Biogeography Theory ◽  
Definite Relation ◽  
Compositional Variability

We used shore boulders that had been previously colonized, and were scattered in a seagrass bed as models for islands. We tested two predictions of Island Biogeography theory: (1) small boulders harbored fewer species than large boulders, and (2) small boulders had higher rates of extinction than large boulders, as reflected in higher faunal replacement variability. We detected a definite relation between species richness and boulder size although not for all statistical models. We did not confirm higher compositional variability in small boulders. 

scholarly journals Altitudinal diversity gradients and the theory of island biogeography - an explanation

2002 ◽  
Vol 8 (3) ◽  
pp. 213
Author(s):  
John Ogden
Keyword(s):  
Species Richness ◽  
New Zealand ◽  
Environmental Variables ◽  
Island Biogeography ◽  
Environmental Heterogeneity ◽  
Causal Agent ◽  
Forest Diversity ◽  
Island Biogeography Theory ◽  
Diversity Gradients ◽  
Theory Of Island Biogeography

As part of a wider discussion of forest diversity in New Zealand, Ogden (1995) pointed out that the area available between any pair of contours on a conical mountain decreased with altitude in parallel with the decrease in species richness. This correlation is confounded with other environmental variables, such as temperature, which have been widely considered to be causal in the diversity decline. However, generalization has been elusive, and the supposed causal mechanisms are often couched in vague terms such as "harshness". Ogden chose to emphasize area, and invoked the theory of island biogeography of MacArthur and Wilson (1967) by drawing parallels between islands and successively superimposed areas on mountains. Kingston (this issue) objected, mainly on the grounds that the theory of island biogeography refers to "isolated" areas and deals with the equilibrium between immigration and extinction, on which Ogden presented no evidence. In the light of these criticisms the data presented in Ogden (1995) is re-assessed here. I conclude that the "area hypothesis" is at least as good as any other for "explaining" (correlating with) elevational diversity trends. Area is itself correlated with environmental heterogeneity, which is presumably more important as a causal agent. However, Kingston's insistence on the need for evidence on immigration and extinction to support the application of island biogeography theory is acknowledged.

How does forest species specialization affect the application of the island biogeography theory in fragmented landscapes?

2016 ◽  
Vol 44 (5) ◽  
pp. 1041-1052 ◽  
Author(s):  
Olivia Dondina ◽  
Valerio Orioli ◽  
Pamela D'Occhio ◽  
Massimiliano Luppi ◽  
Luciano Bani
Keyword(s):  
Island Biogeography ◽  
Forest Species ◽  
Fragmented Landscapes ◽  
Island Biogeography Theory

Response : Ectoparasitic Mites on Rodents: Application of the Island Biogeography Theory?

Science ◽  
1977 ◽  
Vol 195 (4278) ◽  
pp. 598-598
Author(s):  
Barry O'Connor ◽  
William Dritschilo ◽  
Donald Nafus ◽  
Howard Cornell
Keyword(s):  
Island Biogeography ◽  
Island Biogeography Theory

Island biogeography of insect conservation in urban green spaces

2017 ◽  
Vol 45 (1) ◽  
pp. 1-10 ◽  
Author(s):  
SIMONE FATTORINI ◽  
CRISTINA MANTONI ◽  
LIVIA DE SIMONI ◽  
DIANA M.P. GALASSI
Keyword(s):  
Species Richness ◽  
Island Biogeography ◽  
Extinction Risk ◽  
Strong Support ◽  
Insect Conservation ◽  
Green Spaces ◽  
Insect Species ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Insect Species Richness

SUMMARYBecause of their isolation, biotic communities of urban green spaces are expected to be similar to those of oceanic islands. This should be particularly true for insects, which represent an important component of urban faunas. The equilibrium theory of island biogeography (ETIB) allows for the formulation of some hypotheses regarding the influence of the geographical characteristics of green spaces on insect species richness and extinction risk. Based on island biogeography principles, we present eight predictions on how green space characteristics should influence insect species richness and loss. We analysed the current literature in order to determine which predictions were supported and which were not. We found that many studies gave outcomes that support ETIB predictions about the effects of area and isolation of green spaces; we found no strong support for predictions about shape and extent of native habitat in the literature that we reviewed. Most of the available studies dealt with patterns in species richness, whereas insect species loss has been rarely investigated. Future developments in the application of island biogeography principles to urban insect conservation should address temporal trends in species persistence and the analysis of species co-occurrence and nestedness.

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