DengBioDiversity.pdf
... are many theories ([98, 10, 85, 80, 8]), the correlation between the distribution and the climate along the gradient at the global scale is shown to be the strongest ([14, 15]). Palaeotological studies also suggest that gradual climate changes rather than exogenous catastrophes might have caused som ...
... are many theories ([98, 10, 85, 80, 8]), the correlation between the distribution and the climate along the gradient at the global scale is shown to be the strongest ([14, 15]). Palaeotological studies also suggest that gradual climate changes rather than exogenous catastrophes might have caused som ...
Wallabies in South West Vic Mar 2006 RB
... Don MacArthur from Mirranatwa caught a dark-coloured wallaby on his property in 1979 and, since it was obviously not a Red-necked Wallaby, gave it to the late Susan McInnes for care. However, the young animal died, apparently the result of eating poisoned carrots intended for rabbits. This was the f ...
... Don MacArthur from Mirranatwa caught a dark-coloured wallaby on his property in 1979 and, since it was obviously not a Red-necked Wallaby, gave it to the late Susan McInnes for care. However, the young animal died, apparently the result of eating poisoned carrots intended for rabbits. This was the f ...
the intermediate disturbance hypothesis and its applicability to
... by J.H. Connell (see especially Connell, 1978, 1983), although similar ideas had been expressed previously, notably by Grime (1973). In essence, frequent disturbance excludes all but fast-maturing species. Very infrequent disturbance allows competitive exclusion to reduce diversity. Maximum diversit ...
... by J.H. Connell (see especially Connell, 1978, 1983), although similar ideas had been expressed previously, notably by Grime (1973). In essence, frequent disturbance excludes all but fast-maturing species. Very infrequent disturbance allows competitive exclusion to reduce diversity. Maximum diversit ...
Molecular Evidence for Cryptic Species of Aurelia
... Ongeim’l Tketau, Hotwater Lake); semi-enclosed holomictic ‘coves’ or similar waters (Tab Kukau, Malakal, Tketau); and the lagoon, which is open to the ocean (Ngell Channel) [see refs. 29, 31]. The population in Mljet inhabits a semi-enclosed meromictic “cove.” Gut, bell margin, or oral arm tissues w ...
... Ongeim’l Tketau, Hotwater Lake); semi-enclosed holomictic ‘coves’ or similar waters (Tab Kukau, Malakal, Tketau); and the lagoon, which is open to the ocean (Ngell Channel) [see refs. 29, 31]. The population in Mljet inhabits a semi-enclosed meromictic “cove.” Gut, bell margin, or oral arm tissues w ...
Soft-sediment benthic community structure in a coral reef lagoon
... 3 h). Sediments within the lagoon consist predominately of gravelly muddy sands, but there is considerable variation in mud content (range: 4 to 75%) and median particle size (phi [@I range: -0.03 to 4.33) among sites (Table 1). Data analysis. Multivariate analyses follows the strategy originally ou ...
... 3 h). Sediments within the lagoon consist predominately of gravelly muddy sands, but there is considerable variation in mud content (range: 4 to 75%) and median particle size (phi [@I range: -0.03 to 4.33) among sites (Table 1). Data analysis. Multivariate analyses follows the strategy originally ou ...
Light reduction predicts widespread patterns of dominance between
... species, which we used to compare the light attenuation abilities of goldenrods across a range of monospecific densities. The other site (Ernst) was 10 km from Beagle Road. Obtaining estimates of light attenuation ability for species that do not naturally occur in dense stands or are uncommon is cha ...
... species, which we used to compare the light attenuation abilities of goldenrods across a range of monospecific densities. The other site (Ernst) was 10 km from Beagle Road. Obtaining estimates of light attenuation ability for species that do not naturally occur in dense stands or are uncommon is cha ...
Light reduction predicts widespread patterns of dominance between
... species, which we used to compare the light attenuation abilities of goldenrods across a range of monospecific densities. The other site (Ernst) was 10 km from Beagle Road. Obtaining estimates of light attenuation ability for species that do not naturally occur in dense stands or are uncommon is cha ...
... species, which we used to compare the light attenuation abilities of goldenrods across a range of monospecific densities. The other site (Ernst) was 10 km from Beagle Road. Obtaining estimates of light attenuation ability for species that do not naturally occur in dense stands or are uncommon is cha ...
Appendix 1. Revision of the questions on the environmental impact
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
Large mammal diversity and their conservation in the human
... or if reproductive and survival rates decrease for other reasons (Rodewald et al. 2011). In contrast other species may thrive as human-dominated landscapes offer improved living conditions (Chown et al. 2003). Consequently, depending on the taxa of interest these effects then lead to both positive o ...
... or if reproductive and survival rates decrease for other reasons (Rodewald et al. 2011). In contrast other species may thrive as human-dominated landscapes offer improved living conditions (Chown et al. 2003). Consequently, depending on the taxa of interest these effects then lead to both positive o ...
Time asymmetry in the palaeobiogeographic history of species
... within a single region captivates the mind. He who rejects it, rejects the vera causa of ordinary generation with subsequent migration, and calls in the agency of a miracle.” However, in spite of many studies since then, it has not yet been possible to document unambiguously the biogeographic origin ...
... within a single region captivates the mind. He who rejects it, rejects the vera causa of ordinary generation with subsequent migration, and calls in the agency of a miracle.” However, in spite of many studies since then, it has not yet been possible to document unambiguously the biogeographic origin ...
Community Ecology in a Restoration Context
... Community Ecology in a Restoration Context • Restoration from a community ecology perspective – Should focus be on restoring structure (e.g., species composition) or function (e.g., material & energy flows)? • How much of the community needs to be established initially for the site to ultimately su ...
... Community Ecology in a Restoration Context • Restoration from a community ecology perspective – Should focus be on restoring structure (e.g., species composition) or function (e.g., material & energy flows)? • How much of the community needs to be established initially for the site to ultimately su ...
PDF file - Pan-American Journal of Aquatic
... of the dry season (Rodríguez-Cabrera & Rodríguez 2015), could be as well highly vulnerable to predation by C. gariepinus. On the other hand, the presence of Guazuma and Roystonea fruits in the stomachs of C. gariepinus confirm once again that this species makes an opportunistic use of available food ...
... of the dry season (Rodríguez-Cabrera & Rodríguez 2015), could be as well highly vulnerable to predation by C. gariepinus. On the other hand, the presence of Guazuma and Roystonea fruits in the stomachs of C. gariepinus confirm once again that this species makes an opportunistic use of available food ...
Developing New Morphological, Geographic, and
... this species. Monitoring and identification of H. naniflora have often been problematic due to the overlap in flower and leaf morphology with other members of the Hexastylis Heterophylla subgroup. In order to best devise management strategies for this imperiled species, it is vital to understand th ...
... this species. Monitoring and identification of H. naniflora have often been problematic due to the overlap in flower and leaf morphology with other members of the Hexastylis Heterophylla subgroup. In order to best devise management strategies for this imperiled species, it is vital to understand th ...
An Experimental Test of Darwin`s Naturalization Hypothesis
... hypothesis. First, all these studies have assumed high niche similarity between closely related species without directly testing for it. Convergent evolution, if present (e.g., Losos et al. 2003), may result in high similarity between distantly related species that can confound the relationship betw ...
... hypothesis. First, all these studies have assumed high niche similarity between closely related species without directly testing for it. Convergent evolution, if present (e.g., Losos et al. 2003), may result in high similarity between distantly related species that can confound the relationship betw ...
Ecology and Ecosystems - Baltic University Programme
... The Baltic region biology is special for several reasons. The recent – in a biological time frame – glaciation is one reason why diversity is not so large. Evolution and colonization after the retreat of the ice is still taking place. The Baltic Sea is a quite unique brackish water body, as is descr ...
... The Baltic region biology is special for several reasons. The recent – in a biological time frame – glaciation is one reason why diversity is not so large. Evolution and colonization after the retreat of the ice is still taking place. The Baltic Sea is a quite unique brackish water body, as is descr ...
Chapter I INTRODUCTION AND OBJECTIVES
... only few survey have carried out before 20th century in British administration especially in Maharashtra state. Fabricius and Cramer initiated studies on Indian Lepidoptera in 1775 (Hampson, 1892). Frederick Moore brought out a magnificent publication Lepidoptera of Ceylon in 1890-92, covering both ...
... only few survey have carried out before 20th century in British administration especially in Maharashtra state. Fabricius and Cramer initiated studies on Indian Lepidoptera in 1775 (Hampson, 1892). Frederick Moore brought out a magnificent publication Lepidoptera of Ceylon in 1890-92, covering both ...
forms and foundations of contemporary adaptation to
... community of seed-eating insects from three orders that have overcome the plants’ cyanide-based defences (Carroll & Loye 1987, 2006). Due to the curious inflated seedpods and attractive appearance, balloon vine is planted as an ornamental in many warm areas of the world. It was introduced in eastern ...
... community of seed-eating insects from three orders that have overcome the plants’ cyanide-based defences (Carroll & Loye 1987, 2006). Due to the curious inflated seedpods and attractive appearance, balloon vine is planted as an ornamental in many warm areas of the world. It was introduced in eastern ...
Is the number of tree species in small tropical forest plots nonrandom?
... these models to a dataset of 1170 100m2 circular plots in the old-growth portion of La Selva Biological Station in the Atlantic Lowlands of Costa Rica. Although species richness in these plots was close to its theoretical maximum, we found that it was frequently lower than null expectation. This was ...
... these models to a dataset of 1170 100m2 circular plots in the old-growth portion of La Selva Biological Station in the Atlantic Lowlands of Costa Rica. Although species richness in these plots was close to its theoretical maximum, we found that it was frequently lower than null expectation. This was ...
Diversity, Structure and Regeneration Status of
... areas of the country. This figure indicates that the largest vegetation resources of Ethiopia are found in the drylands (Tefera et al., 2004; Abeje et al., 2005). However, this diverse valuable vegetation resource is under severe threat. Environmental degradation aggravated by poverty, which in turn ...
... areas of the country. This figure indicates that the largest vegetation resources of Ethiopia are found in the drylands (Tefera et al., 2004; Abeje et al., 2005). However, this diverse valuable vegetation resource is under severe threat. Environmental degradation aggravated by poverty, which in turn ...
Mechanisms responsible for the positive diversity–productivity relationship in Minnesota grasslands
... ecosystem ecologists have also become interested in these interactions, because the consequences of species extinctions for ecosystem metrics such as aboveground productivity may depend on the same species interactions that determine community dynamics (Naeem et al. 1994; Petchey 2000; Cardinale et ...
... ecosystem ecologists have also become interested in these interactions, because the consequences of species extinctions for ecosystem metrics such as aboveground productivity may depend on the same species interactions that determine community dynamics (Naeem et al. 1994; Petchey 2000; Cardinale et ...
Why Biodiversity Matters
... Thus, Rosenzweig continues, “We must abandon any expectation that reserves by themselves, whether pristine or restored, will do much more than collect crumbs. They are the 5 percent. We need to work on the 95 percent.” Equally important is the number of populations reserves can protect, since it is ...
... Thus, Rosenzweig continues, “We must abandon any expectation that reserves by themselves, whether pristine or restored, will do much more than collect crumbs. They are the 5 percent. We need to work on the 95 percent.” Equally important is the number of populations reserves can protect, since it is ...
Invasive Earthworms
... few years. Why are Worms Detrimental: Earthworms have successfully invaded every continent of the world (excepting Antarctica) (Coles, and Walker). The invasive species of earthworms in North America (such as the species A. hilgendorfi) grow and mature extremely quickly, resulting in a low generatio ...
... few years. Why are Worms Detrimental: Earthworms have successfully invaded every continent of the world (excepting Antarctica) (Coles, and Walker). The invasive species of earthworms in North America (such as the species A. hilgendorfi) grow and mature extremely quickly, resulting in a low generatio ...
Rewilding and Biodiversity
... back into the Pleistocene when huge mammals dominated the continent’s ecosystems. Starting between 11,000 and 12,000 years ago, the megafauna virtually disappeared. The die-off was brief, lasting only about 2,000 years. Human beings are implicated in this catastrophic extirpation—sometimes referred ...
... back into the Pleistocene when huge mammals dominated the continent’s ecosystems. Starting between 11,000 and 12,000 years ago, the megafauna virtually disappeared. The die-off was brief, lasting only about 2,000 years. Human beings are implicated in this catastrophic extirpation—sometimes referred ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.