The Overriding Importance of Environmental Context in Determining
... tion. Mussels (M. californianus, the preferred prey of Pisaster) were transplanted from mid-zone beds to low intertidal regions (where these bivalves are normally almost absent) to plots with and without Pisaster (Ⳮsea stars and ⳮsea stars, respectively). Experiments were conducted at wave-exposed a ...
... tion. Mussels (M. californianus, the preferred prey of Pisaster) were transplanted from mid-zone beds to low intertidal regions (where these bivalves are normally almost absent) to plots with and without Pisaster (Ⳮsea stars and ⳮsea stars, respectively). Experiments were conducted at wave-exposed a ...
Pseudomys novaehollandiae, New Holland Mouse
... Mouse are strongly impacted by rainfall. Subpopulations in New South Wales have been shown to increase the length of their breeding season, and thus reproductive output, during times of above average rainfall (Kemper 1976, 1980). Maximum population densities at Anglesea, Victoria were recorded follo ...
... Mouse are strongly impacted by rainfall. Subpopulations in New South Wales have been shown to increase the length of their breeding season, and thus reproductive output, during times of above average rainfall (Kemper 1976, 1980). Maximum population densities at Anglesea, Victoria were recorded follo ...
Chapter 11 - Matters of National Environmental Significance
... community that may occur within the Study Area: the Lowland Rainforests of Subtropical Australia. The ecological community is listed as critically endangered. The Lowland Rainforests of Subtropical Australia community was listed under the EPBC Act on 25 November 2011. Although the community was list ...
... community that may occur within the Study Area: the Lowland Rainforests of Subtropical Australia. The ecological community is listed as critically endangered. The Lowland Rainforests of Subtropical Australia community was listed under the EPBC Act on 25 November 2011. Although the community was list ...
Effects of Natural Forest Fragmentation on a Hawaiian Spider
... spiders, primarily in the genus Tetragnatha. We measured plant and spider species distributions across the edges of four small fragments and one large continuously forested area that were surrounded by a lava ßow in 1855. Results indicated that an ⬇20 m edge ecotone surrounds core forest habitat. Sp ...
... spiders, primarily in the genus Tetragnatha. We measured plant and spider species distributions across the edges of four small fragments and one large continuously forested area that were surrounded by a lava ßow in 1855. Results indicated that an ⬇20 m edge ecotone surrounds core forest habitat. Sp ...
Niches and Community Interactions
... A species’ tolerance for environmental conditions, then, helps determine its habitat—the general place where an organism lives. ...
... A species’ tolerance for environmental conditions, then, helps determine its habitat—the general place where an organism lives. ...
Composition of Mix Species Foraging Flocks of Birds in Riverstan of
... constraints of their own home range (Powell, 1985). Dark fronted Babbler was a territorial bird and they joined with the flock only in their territory. Sri Lanka Spot winged Thrush (Zoothera spiloptera) joined to flocks in law frequency (2.86) and moved few distance with the flocks. The flock size w ...
... constraints of their own home range (Powell, 1985). Dark fronted Babbler was a territorial bird and they joined with the flock only in their territory. Sri Lanka Spot winged Thrush (Zoothera spiloptera) joined to flocks in law frequency (2.86) and moved few distance with the flocks. The flock size w ...
Understanding and confronting species uncertainty in biology and
... can be observed easily and have distinguishing morphological characters, this subjective element will seem remote and biologists can agree on the organisms to be included in a species taxon. However, for many organisms that live in soil or water, or within or upon other larger organisms, the subject ...
... can be observed easily and have distinguishing morphological characters, this subjective element will seem remote and biologists can agree on the organisms to be included in a species taxon. However, for many organisms that live in soil or water, or within or upon other larger organisms, the subject ...
Zalophus wollebaeki, Galápagos Sea Lion
... © The IUCN Red List of Threatened Species: Zalophus wollebaeki – published in 2015. http://dx.doi.org/10.2305/IUCN.UK.2015-2.RLTS.T41668A45230540.en ...
... © The IUCN Red List of Threatened Species: Zalophus wollebaeki – published in 2015. http://dx.doi.org/10.2305/IUCN.UK.2015-2.RLTS.T41668A45230540.en ...
The Diversity and Impacts of Alien Species
... ranges within that order), appeared severe. As many earlier workers had noted, a broad host range was considered advantageous for species introduced during early biological control programmes on the archipelago. Their legacy has been strong implication in the reduction and extinctions of many native ...
... ranges within that order), appeared severe. As many earlier workers had noted, a broad host range was considered advantageous for species introduced during early biological control programmes on the archipelago. Their legacy has been strong implication in the reduction and extinctions of many native ...
Adaptive Radiation - Princeton University Press
... If this were a universal route to species multiplication, those environments without physical barriers should have fewer species, area for area, than fragmented ...
... If this were a universal route to species multiplication, those environments without physical barriers should have fewer species, area for area, than fragmented ...
Predicting Extinction Risk of Brazilian Atlantic Forest
... of global-scale species extinction risk. The smaller the species range size, the higher the probability that disturbances and environmental changes will affect the entire species range (Gaston & Blackburn 2000). Extent of occurrence and area of occupancy are among the most useful and widely adopted ...
... of global-scale species extinction risk. The smaller the species range size, the higher the probability that disturbances and environmental changes will affect the entire species range (Gaston & Blackburn 2000). Extent of occurrence and area of occupancy are among the most useful and widely adopted ...
Ecology - Zanichelli online
... In order to survive in different environmental conditions, species adopt different strategies. Opportunistic species (r-strategist) • Exponential population growth followed by periodic falls in population size; • Small individuals with short life spam; • Many offspring, but with relatively low proba ...
... In order to survive in different environmental conditions, species adopt different strategies. Opportunistic species (r-strategist) • Exponential population growth followed by periodic falls in population size; • Small individuals with short life spam; • Many offspring, but with relatively low proba ...
Diversity and Productivity in a Long-Term Grassland Experiment David Tilman,
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
... biomass on species number and composition was not explained solely by sampling effects for a species pool containing some poorly performing species. We tested the sampling hypothesis that the most productive species determined the effects of diversity (6, 9, 17) by retaining in analyses of year 2000 ...
Should Extinction Be Forever
... change ecosystem dynamics causing extinction or threat of other species (Cottrell et al. 2013). One consolation to this grim scenario is that mammoths did not have a high reproduction rate, like many other mammalian de-extinction candidate species, and therefore would be unlikely to spread rapidly l ...
... change ecosystem dynamics causing extinction or threat of other species (Cottrell et al. 2013). One consolation to this grim scenario is that mammoths did not have a high reproduction rate, like many other mammalian de-extinction candidate species, and therefore would be unlikely to spread rapidly l ...
Conservation Strategies for Species Affected by Apparent Competition
... be negatively correlated with that of the other. However, when abundances of the 2 prey species differ considerably, their interactions may become asymmetrical. The mechanisms driving this asymmetry vary and may, for example, be related to differences in life history such as fecundity rates or vulne ...
... be negatively correlated with that of the other. However, when abundances of the 2 prey species differ considerably, their interactions may become asymmetrical. The mechanisms driving this asymmetry vary and may, for example, be related to differences in life history such as fecundity rates or vulne ...
Critical reading questions - College of Biological Sciences
... “potential” (uncertain or future), as indiFisheries Department 2004); thus, overexploitation has cated by the listing agency (Table 1). Major and minor the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct ...
... “potential” (uncertain or future), as indiFisheries Department 2004); thus, overexploitation has cated by the listing agency (Table 1). Major and minor the potential to be a major threat to both target and non- threats were not separated, as this information was not contarget species through direct ...
multi-species grouping is a defense strategy for 3 sympatric Batoids
... random errors in size estimation for total length would ...
... random errors in size estimation for total length would ...
Sample Size Dependence in Measures of Proportional Similarity
... and Blake (1977), who presented values of both measures for one data set with sample size ratio Y/X = 2.7. This gave the results PS, = 0.850 and PS, = 0.513. Gallaher and Blake (1977: 264) stated: 'These results suggest that the relative index PS, is dominated by compositional similarity; whereas, t ...
... and Blake (1977), who presented values of both measures for one data set with sample size ratio Y/X = 2.7. This gave the results PS, = 0.850 and PS, = 0.513. Gallaher and Blake (1977: 264) stated: 'These results suggest that the relative index PS, is dominated by compositional similarity; whereas, t ...
Using assembly rules to measure the resilience of riparian
... beaver impacts in the Argentine study area were well known, since the site was within Tierra del Fuego National Park and monitored by the National Parks Administration and the Centro Austral de Investigaciones Cientı´ficas. Un-disturbed assemblages among streams were shown to be highly homogeneous, ...
... beaver impacts in the Argentine study area were well known, since the site was within Tierra del Fuego National Park and monitored by the National Parks Administration and the Centro Austral de Investigaciones Cientı´ficas. Un-disturbed assemblages among streams were shown to be highly homogeneous, ...
Interactions between species and the structure of helminth
... research in parasite community ecology, yet there is no consensus regarding their general importance. There have been two different approaches to the study of species interactions in helminths. The first one consists of measuring the responses of helminth species in concomitant infections, preferabl ...
... research in parasite community ecology, yet there is no consensus regarding their general importance. There have been two different approaches to the study of species interactions in helminths. The first one consists of measuring the responses of helminth species in concomitant infections, preferabl ...
Bergmann`s rule and the mammal fauna of northern North America
... range midpoints fall within a given region thus exclude information from all species whose ranges overlap that region but are centred elsewhere. Moreover, mid-points may be poor descriptors of a species range for widespread species. For example, large-bodied species expected by Bergmann’s rule to oc ...
... range midpoints fall within a given region thus exclude information from all species whose ranges overlap that region but are centred elsewhere. Moreover, mid-points may be poor descriptors of a species range for widespread species. For example, large-bodied species expected by Bergmann’s rule to oc ...
Growling Grass Frog
... Published by the Victorian Government Department of Sustainability and Environment, Warrnambool, November 2007 © The State of Victoria Department of Sustainability and Environment 2007 This publication is copyright. No part may be reproduced by any process except in accordance with the provisions of ...
... Published by the Victorian Government Department of Sustainability and Environment, Warrnambool, November 2007 © The State of Victoria Department of Sustainability and Environment 2007 This publication is copyright. No part may be reproduced by any process except in accordance with the provisions of ...
Within outlying mean indexes: refining the OMI analysis for
... the subniches of species within a community in the same reference plane, made by the resulting factorial axes from the OMI analysis. The subniche is defined hereafter, as a subset of habitat conditions used by a species. Inspired by the OMI analysis (Dolédec, Chessel & Gimaret-Carpentier, 2000) and ...
... the subniches of species within a community in the same reference plane, made by the resulting factorial axes from the OMI analysis. The subniche is defined hereafter, as a subset of habitat conditions used by a species. Inspired by the OMI analysis (Dolédec, Chessel & Gimaret-Carpentier, 2000) and ...