Multiple, independent colonizations of the Hawaiian
... The Hawaiian-Emperor Archipelago has a long and dynamic geological history, well isolated in the central Pacific Ocean far from any continental mass. It has been forming by the motion of the Pacific plate over a stationary hotspot (Wilson, 1963), generating an island chain that is at least 80 millio ...
... The Hawaiian-Emperor Archipelago has a long and dynamic geological history, well isolated in the central Pacific Ocean far from any continental mass. It has been forming by the motion of the Pacific plate over a stationary hotspot (Wilson, 1963), generating an island chain that is at least 80 millio ...
Daphnia as keystone predators - Orlando Sarnelle
... abundance data for the 10 most common species were subjected to principle components analysis (PCA) and the resulting PCA factor scores were used as response variables in statistical tests. Consumer effects on prey species diversity may be manifest via effects on the number of prey species (richness ...
... abundance data for the 10 most common species were subjected to principle components analysis (PCA) and the resulting PCA factor scores were used as response variables in statistical tests. Consumer effects on prey species diversity may be manifest via effects on the number of prey species (richness ...
a new species of blind snake, typhlops marxi, from the philippines
... matter of debate. The last complete review of the fauna was Taylor's (1922) monograph on Philippine snakes in which he recognized fourteen species (Table 1). Since then four additional species have been described, two by Savage (1950), Typhlops hypogius and T. hedraeus, and two by Wynn & Leviton (19 ...
... matter of debate. The last complete review of the fauna was Taylor's (1922) monograph on Philippine snakes in which he recognized fourteen species (Table 1). Since then four additional species have been described, two by Savage (1950), Typhlops hypogius and T. hedraeus, and two by Wynn & Leviton (19 ...
Coccolithophores: From Extant Populations to Fossil Assemblages
... shape, may only be synthesized during their motile stage. The fragile structure of holococcoliths renders them particularly vulnerable to disintegration during the process of sedimentation, and therefore, although common among living populations, they are barely represented in the fossil record. SEM ...
... shape, may only be synthesized during their motile stage. The fragile structure of holococcoliths renders them particularly vulnerable to disintegration during the process of sedimentation, and therefore, although common among living populations, they are barely represented in the fossil record. SEM ...
The impacts of elephants on biodiversity in the Eastern
... reduced to a single population limited to the Addo Elephant National Park (AENP). The results of research on elephant impacts associated with this population has shown that these animals influence many ecological processes, and patterns, including soil features, landscape patchiness and plant biomas ...
... reduced to a single population limited to the Addo Elephant National Park (AENP). The results of research on elephant impacts associated with this population has shown that these animals influence many ecological processes, and patterns, including soil features, landscape patchiness and plant biomas ...
Grasslands of the Aishihik-Sekulmun Lakes Area, Yukon Territory
... roughly on the west by the Nisling and Ruby Ranges, to the north by Stevens Lake, to the east by Hopkins and Giltana Lakes, and to the south by the confluence of the West Aishihik and Aishihik Rivers. Interpretations of black-and-white aerial photography (1979; 1:60 000) identified possible xeric gr ...
... roughly on the west by the Nisling and Ruby Ranges, to the north by Stevens Lake, to the east by Hopkins and Giltana Lakes, and to the south by the confluence of the West Aishihik and Aishihik Rivers. Interpretations of black-and-white aerial photography (1979; 1:60 000) identified possible xeric gr ...
28/09/03 1 Classification: Biological Sciences: Evolution 1 2
... events within regional clades is most consistent with population growth in relatively isolated populations, following a recent period of restricted population size. These different demographic histories suggest that the wing pattern radiations were not coincident in the two species. Instead, larger ...
... events within regional clades is most consistent with population growth in relatively isolated populations, following a recent period of restricted population size. These different demographic histories suggest that the wing pattern radiations were not coincident in the two species. Instead, larger ...
THE INFLUENCE OF THE AFRICAN ELEPHANT (LOXODONTA
... sampled during the late dry season, a subset of eight species made up 95% of the elephant diet on both study sites and, within this narrow range, certain species were preferred to others. Shrubs between 1m and 2.5m in height and trees above 4.5m were the selected target. Utilization of distinct heig ...
... sampled during the late dry season, a subset of eight species made up 95% of the elephant diet on both study sites and, within this narrow range, certain species were preferred to others. Shrubs between 1m and 2.5m in height and trees above 4.5m were the selected target. Utilization of distinct heig ...
Understanding Rangeland Biodiversity
... Rangelands are geographical regions dominated by grass and grass-like species with or without scattered woody plants, occupying between 18–23% of world land area excluding Antarctica. Rangelands are home both to significant concentrations of large mammals and plants with a high value in both leisure ...
... Rangelands are geographical regions dominated by grass and grass-like species with or without scattered woody plants, occupying between 18–23% of world land area excluding Antarctica. Rangelands are home both to significant concentrations of large mammals and plants with a high value in both leisure ...
Ant community change across a ground vegetation
... Ant communities in longleaf pine habitats are poorly known and hence the naturally occurring ant assemblages of a large portion of southeastern North America are not well understood. This study examined the diverse ant community found in the longleaf pine flatwoods of north Florida and tested how an ...
... Ant communities in longleaf pine habitats are poorly known and hence the naturally occurring ant assemblages of a large portion of southeastern North America are not well understood. This study examined the diverse ant community found in the longleaf pine flatwoods of north Florida and tested how an ...
english contents - The Field Museum
... is to interpret and conserve the earth’s biological diversity through research, education, and citizen science focused on birds. Our programs work with citizen scientists, government and nongovernment agencies across North America and beyond. We believe that bird enthusiasts of all ages and skill le ...
... is to interpret and conserve the earth’s biological diversity through research, education, and citizen science focused on birds. Our programs work with citizen scientists, government and nongovernment agencies across North America and beyond. We believe that bird enthusiasts of all ages and skill le ...
Chromolaena odorata ungulate grazing on ant body size and communities in
... that invades southern Africa has bright yellow green leaves when young and glabrous fragile stems. It produces white flowers and leaves that produce a sharp odour when smashed. It has rounded furry and nearly smooth shoots. Chromolaena odorata is a fast growing herbaceous bush with straight fragile ...
... that invades southern Africa has bright yellow green leaves when young and glabrous fragile stems. It produces white flowers and leaves that produce a sharp odour when smashed. It has rounded furry and nearly smooth shoots. Chromolaena odorata is a fast growing herbaceous bush with straight fragile ...
The Dynamics of Temperate Forest Fragmentation
... associated with tropical rain forest fragmentation. The most prominent of these studies is the Biological Dynamics of Fragmentation project, a long term study of fragmentation conducted on land cleared for grazing in the Brazilian Amazon (Lovejoy et al. 1986, Bierregaard et al. 1992, Lovejoy and Or ...
... associated with tropical rain forest fragmentation. The most prominent of these studies is the Biological Dynamics of Fragmentation project, a long term study of fragmentation conducted on land cleared for grazing in the Brazilian Amazon (Lovejoy et al. 1986, Bierregaard et al. 1992, Lovejoy and Or ...
the maintenance of species diversity by disturbance
... defining intensity as size times frequency, we avoid some problems but create others. We are assuming that all disturbances within any particular system under observation, regardless of intensity, cause the same level of damage per unit area per unit time-that is, they are equally severe. Our defini ...
... defining intensity as size times frequency, we avoid some problems but create others. We are assuming that all disturbances within any particular system under observation, regardless of intensity, cause the same level of damage per unit area per unit time-that is, they are equally severe. Our defini ...
Elucidating the native sources of an invasive tree species, Acacia
... † Background and Aims Understanding the introduction history of invasive plant species is important for their management and identifying effective host-specific biological control agents. However, uncertain taxonomy, intra- and interspecific hybridization, and cryptic speciation may obscure introduc ...
... † Background and Aims Understanding the introduction history of invasive plant species is important for their management and identifying effective host-specific biological control agents. However, uncertain taxonomy, intra- and interspecific hybridization, and cryptic speciation may obscure introduc ...
No. 53 - Alberta Amphibian Call Surveys: A Pilot Year Final Report
... throughout Alberta. Amphibians were heard at 55% of the point count stations and on 187 stations (37.6%) along the transects (n=497 stations). Species recorded included: western toad, Canadian toad, Great Plains toad, plains spadefoot, boreal chorus frog, wood frog, Columbia spotted frog, and northe ...
... throughout Alberta. Amphibians were heard at 55% of the point count stations and on 187 stations (37.6%) along the transects (n=497 stations). Species recorded included: western toad, Canadian toad, Great Plains toad, plains spadefoot, boreal chorus frog, wood frog, Columbia spotted frog, and northe ...
Land-use intensification reduces functional redundancy and
... identify appropriate datasets, co-ordinators of this working group approached ecologists who had published results on plant species and functional diversity from human-altered landscapes. We aimed to identify appropriate datasets from diverse regions of the world and did not aim to obtain more than ...
... identify appropriate datasets, co-ordinators of this working group approached ecologists who had published results on plant species and functional diversity from human-altered landscapes. We aimed to identify appropriate datasets from diverse regions of the world and did not aim to obtain more than ...
Research Information on Acacia Erioloba
... 1999), it appears not nearly as important as amount and pattern of rainfall for successful recruitment, as evidenced by the presence of cohorts (Ernst et al. 1990, Hoffman et al. 1994, Barnes 1999, 2001b). Although we know that timing of rain and a certain minimum, frequent amount is required for ge ...
... 1999), it appears not nearly as important as amount and pattern of rainfall for successful recruitment, as evidenced by the presence of cohorts (Ernst et al. 1990, Hoffman et al. 1994, Barnes 1999, 2001b). Although we know that timing of rain and a certain minimum, frequent amount is required for ge ...
Comparison of three vegetation monitoring methods: Their relative
... calibration and local monitoring. Despite the widespread interest in vegetation cover and composition indicators, there have been few successful attempts to standardize them so that they can be compared across space and time. These differences persist within and among agencies in the United States a ...
... calibration and local monitoring. Despite the widespread interest in vegetation cover and composition indicators, there have been few successful attempts to standardize them so that they can be compared across space and time. These differences persist within and among agencies in the United States a ...
biogeographic atlas of the southern ocean
... (Meissner, 1900), another found in sub-Antarctic, Antarctic and southern temperate deep waters of outer continental shelves, S. antarcticus (Koehler, 1901), and the third one, S. dentifer (Koehler, 1926) that is known from a few deep-sea records. Due to the scarcity of specimens collected, the taxon ...
... (Meissner, 1900), another found in sub-Antarctic, Antarctic and southern temperate deep waters of outer continental shelves, S. antarcticus (Koehler, 1901), and the third one, S. dentifer (Koehler, 1926) that is known from a few deep-sea records. Due to the scarcity of specimens collected, the taxon ...
Mangrove Reference Database and Herbarium
... ESF Marine Board, MARS, EMODNET and other European networks. VMDC hosts the Mangrove Reference Database on its server and develops ICT tools to ease its use. Since universities in Brussels and Flanders (Belgium) had played a long-standing role in research on mangrove ecosystems, at the origin focuse ...
... ESF Marine Board, MARS, EMODNET and other European networks. VMDC hosts the Mangrove Reference Database on its server and develops ICT tools to ease its use. Since universities in Brussels and Flanders (Belgium) had played a long-standing role in research on mangrove ecosystems, at the origin focuse ...
Are We Missing the Forest for the Trees?
... Emily -‐‑ I sincerely hope to be the “Emily Latch” of a university. Until then, I will rank all my collaborators on a 1 to “Emily Latch” scale based on how balanced, compassionate, kind, and t ...
... Emily -‐‑ I sincerely hope to be the “Emily Latch” of a university. Until then, I will rank all my collaborators on a 1 to “Emily Latch” scale based on how balanced, compassionate, kind, and t ...
Algeria - BirdLife Data Zone
... takes many forms and elevations. In the far north-west a shelf of high land extends into the country from Morocco to form the dry stone and gravel desert known as the Hamada du Draâ. Here, there is very little rainfall and only ephemeral streams. Further east, the southern slopes of the Saharan Atla ...
... takes many forms and elevations. In the far north-west a shelf of high land extends into the country from Morocco to form the dry stone and gravel desert known as the Hamada du Draâ. Here, there is very little rainfall and only ephemeral streams. Further east, the southern slopes of the Saharan Atla ...
Fish communities and threatened species distribution of NSW
... aquatic molluscs, beachworms, aquatic insects and other aquatic invertebrates – all of which are classified as ‘fish’ under the Fisheries Management Act 1994. NSW has an estimated 118 species of freshwater fish, including native (57 species), introduced (17), estuarine vagrant (31) and as yet undesc ...
... aquatic molluscs, beachworms, aquatic insects and other aquatic invertebrates – all of which are classified as ‘fish’ under the Fisheries Management Act 1994. NSW has an estimated 118 species of freshwater fish, including native (57 species), introduced (17), estuarine vagrant (31) and as yet undesc ...
The Extinction of Endemic Species by a Program of
... (Mead 1961, 1979). It was introduced into Euglandina rosea. Living A chatina are still to Tahiti (by someone who wished to breed it for be found in the territories occupied by Eugfood) in 1967 and spread rapidly to the other landina, and the decline in the number of A chaislands in the archipelago. ...
... (Mead 1961, 1979). It was introduced into Euglandina rosea. Living A chatina are still to Tahiti (by someone who wished to breed it for be found in the territories occupied by Eugfood) in 1967 and spread rapidly to the other landina, and the decline in the number of A chaislands in the archipelago. ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.