B. Current Taxonomic Status History: How many manzanita species
... (1891) described much of San Francisco as having chaparral dominating most of the hilltops and ridgetops in San Francisco, principally by Ceanothus thyrsiflorus (blue blossom), but also with large numbers of manzanitas (Arctostaphylos species). Eastwood (1905) was the first to describe a San Francis ...
... (1891) described much of San Francisco as having chaparral dominating most of the hilltops and ridgetops in San Francisco, principally by Ceanothus thyrsiflorus (blue blossom), but also with large numbers of manzanitas (Arctostaphylos species). Eastwood (1905) was the first to describe a San Francis ...
in Managed Spruce Forests – a Summary of Finnish Case Studies
... Received 31 October 2000 Accepted 20 March 2002 ...
... Received 31 October 2000 Accepted 20 March 2002 ...
Species Diversity of Seed-Eating Desert Rodents in
... dead traps. I had hoped that these traps would sample all species with approximately equal efficiency; however, some individuals of Dipodomys desert, the largest species, were able to break away from them. The traps were placed in sets of four (positioned as described by Brown and Lieberman 1973) sp ...
... dead traps. I had hoped that these traps would sample all species with approximately equal efficiency; however, some individuals of Dipodomys desert, the largest species, were able to break away from them. The traps were placed in sets of four (positioned as described by Brown and Lieberman 1973) sp ...
COMMUNITY INVASIBILITY, RECRUITMENT LIMITATION, AND GRASSLAND BIODIVERSITY D T
... initial species richness of plots, suggesting that species-rich sites were more resistant to invasion. Plot invasibility also depended on the abundances and species richness of plant functional groups in the plots, but was independent of seed size and of total plant cover. The major functional group ...
... initial species richness of plots, suggesting that species-rich sites were more resistant to invasion. Plot invasibility also depended on the abundances and species richness of plant functional groups in the plots, but was independent of seed size and of total plant cover. The major functional group ...
factors affecting community composition of forest regeneration in
... Holl et al. 2000, Wijdeven and Kuzee 2000, Zimmerman et al. 2000). Consequently, early secondary succession follows the nucleation model of succession at many tropical sites (sensu Yarranton and Morrison [1974]) because remnant trees (Guevara et al. 1986, Guevara and Laborde 1993), shrubs (Vieira et ...
... Holl et al. 2000, Wijdeven and Kuzee 2000, Zimmerman et al. 2000). Consequently, early secondary succession follows the nucleation model of succession at many tropical sites (sensu Yarranton and Morrison [1974]) because remnant trees (Guevara et al. 1986, Guevara and Laborde 1993), shrubs (Vieira et ...
Desirable mathematical properties of indicators for biodiversity change
... equal to the widely used Bray–Curtis metric (Spellerberg, 1991; Rooney et al., 2004). 2.2. Desirable properties of indicators Taking into account the mathematical properties of indicators is not exclusively important for biodiversity but also applies to other statistical fields. It has had much atten ...
... equal to the widely used Bray–Curtis metric (Spellerberg, 1991; Rooney et al., 2004). 2.2. Desirable properties of indicators Taking into account the mathematical properties of indicators is not exclusively important for biodiversity but also applies to other statistical fields. It has had much atten ...
Read full study - Center for Watershed Sciences
... Although great strides are being made in the methods to adapt conservation planning principals and conservation strategies to the particularities of freshwater systems [12–13], conservation action is hampered by a lack of basic information about the definition and location of these species. The firs ...
... Although great strides are being made in the methods to adapt conservation planning principals and conservation strategies to the particularities of freshwater systems [12–13], conservation action is hampered by a lack of basic information about the definition and location of these species. The firs ...
Coevolutionary motion and swarming in a niche space model of
... on the organism, hence the niche space would be an “m-dimensional hypervolume”. In this way Hutchinson defined any number m of limiting factors (e.g., temperature, height, resource, salinity, etc.) for a given organism and the niche is regarded as the range of those n factors in which the species can ...
... on the organism, hence the niche space would be an “m-dimensional hypervolume”. In this way Hutchinson defined any number m of limiting factors (e.g., temperature, height, resource, salinity, etc.) for a given organism and the niche is regarded as the range of those n factors in which the species can ...
Habitat fragmentation causes immediate and time
... and homoscedasticity. Landscape area was measured as the amount of grassland habitat within a 2-km circle around the centre of each study patch, including the focal patch area. In all the regression models in which species richness was related to the four explanatory variables, country was included ...
... and homoscedasticity. Landscape area was measured as the amount of grassland habitat within a 2-km circle around the centre of each study patch, including the focal patch area. In all the regression models in which species richness was related to the four explanatory variables, country was included ...
Phylogeographic Analyses and Paleodistribution
... Phylogeographic patterns of each species were investigated primarily by considering the frequency and the geographic distribution of each HT as well as their distribution among and within the three species. Combining these results with the known relationship of the HTs, we wanted to detect possible ...
... Phylogeographic patterns of each species were investigated primarily by considering the frequency and the geographic distribution of each HT as well as their distribution among and within the three species. Combining these results with the known relationship of the HTs, we wanted to detect possible ...
Observations On Environmental Change in South Africa
... Wilgen and Alan Whitfield generously supplied supplementary photographs. ...
... Wilgen and Alan Whitfield generously supplied supplementary photographs. ...
Monomorium kugleri n. sp., a new fossil ant species (Hymenoptera
... called Saxonian), Scandinavian, and Rovno Ambers, ca. 35 Ma, are the best studied among all known fossil ant faunas in the world. Despite the fact that the study of ants of the Rovno Amber (north of Rovno Region, Ukrainian Polesye) began less than 10 years ago, 54 ant species from 29 genera have alr ...
... called Saxonian), Scandinavian, and Rovno Ambers, ca. 35 Ma, are the best studied among all known fossil ant faunas in the world. Despite the fact that the study of ants of the Rovno Amber (north of Rovno Region, Ukrainian Polesye) began less than 10 years ago, 54 ant species from 29 genera have alr ...
ktf0482
... areas where submarine groundwater discharge (SGD) or seepage occurs rather than in estuaries (Ruwa and Polk, 1986). Mangrove forests in Kenya are currently being heavily exploited (Kokwaro, 1986) especially in urban areas where they are under environmental stress due to uncontrolled disposal of dome ...
... areas where submarine groundwater discharge (SGD) or seepage occurs rather than in estuaries (Ruwa and Polk, 1986). Mangrove forests in Kenya are currently being heavily exploited (Kokwaro, 1986) especially in urban areas where they are under environmental stress due to uncontrolled disposal of dome ...
Local and regional factors influencing dung beetle assemblage structure across an
... influence dung beetle assemblage structure at six study sites from Chobe National Park to the Central Kalahari Reserve to the Kgalagadi Transfrontier Park using carrion and four dung types as bait (pig, elephant, cattle, sheep). Regional patterns were primarily influenced by climate (rainfall) while ...
... influence dung beetle assemblage structure at six study sites from Chobe National Park to the Central Kalahari Reserve to the Kgalagadi Transfrontier Park using carrion and four dung types as bait (pig, elephant, cattle, sheep). Regional patterns were primarily influenced by climate (rainfall) while ...
Montane Patch Formation: the Influence of Climate
... Juniperus communis), which is now located at high elevations as montane forest patches, was contiguous across the Great Basin at this time (Grayson 1993: Rickart 2001). The historic distributions of these species were lower than their present distributions by about 600 to 900 m. These forests were ...
... Juniperus communis), which is now located at high elevations as montane forest patches, was contiguous across the Great Basin at this time (Grayson 1993: Rickart 2001). The historic distributions of these species were lower than their present distributions by about 600 to 900 m. These forests were ...
An Example from the Coastal Plain of
... regional (> km²) community types, which can then be used to successfully determine target conditions for restoration efforts. Over the past twenty years, the Carolina Vegetation Survey (CVS) has acquired high-quality biotic and abiotic records from over 6,000 vegetation plots distributed across Nort ...
... regional (> km²) community types, which can then be used to successfully determine target conditions for restoration efforts. Over the past twenty years, the Carolina Vegetation Survey (CVS) has acquired high-quality biotic and abiotic records from over 6,000 vegetation plots distributed across Nort ...
View as PDF - Montana State University
... Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106 ...
... Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106 ...
The Cryptic Bombus lucorum Complex
... for B. magnus could be found. B. lucorum and B. cryptarum co-occur in 13 of 18 study areas, in the remaining five areas only B. lucorum was found. B. lucorum is by far the most common species, followed by B. cryptarum with 86 specimens. B. lucorum was more abundant in the majority of study areas, on ...
... for B. magnus could be found. B. lucorum and B. cryptarum co-occur in 13 of 18 study areas, in the remaining five areas only B. lucorum was found. B. lucorum is by far the most common species, followed by B. cryptarum with 86 specimens. B. lucorum was more abundant in the majority of study areas, on ...
Nevada Wildlife Action Plan - Nevada Department of Wildlife
... caves, trees, bridges, and other man-made structures. The numbers of species found in Nevada represent almost half of all the species found in the U.S. While historic numbers and distribution of bats are not known, it is certain that many of our species are patchy in distribution and have declined o ...
... caves, trees, bridges, and other man-made structures. The numbers of species found in Nevada represent almost half of all the species found in the U.S. While historic numbers and distribution of bats are not known, it is certain that many of our species are patchy in distribution and have declined o ...
The biodiversity values of European virgin forests
... Conservation (of species and genotypes): People have different motivations for species conservation. A very profound one for most human beings is the ethical or socio-cultural motivation, which tries to avoid doing harm to living creatures, or to force a species into extinction just for human need o ...
... Conservation (of species and genotypes): People have different motivations for species conservation. A very profound one for most human beings is the ethical or socio-cultural motivation, which tries to avoid doing harm to living creatures, or to force a species into extinction just for human need o ...
worlds smallest snake is as thin as spaghetti
... were published in the scientific journal Zootaxa on Sunday. The biggest and smallest types of animals often are found living on islands where species over time can fill ecological niches in habitats without competition from other creatures not living in the isolated locations. The world's longest sn ...
... were published in the scientific journal Zootaxa on Sunday. The biggest and smallest types of animals often are found living on islands where species over time can fill ecological niches in habitats without competition from other creatures not living in the isolated locations. The world's longest sn ...
The Marine Biosecurity Porthole – a web
... The Marine Biosecurity Porthole was created in 2010 as a collaboration between New Zealand’s Ministry for Primary Industries (MPI) and the National Institute for Water and Atmospheric Research (NIWA) to provide greater public access to information and data on nonindigenous marine species (NIMS) in N ...
... The Marine Biosecurity Porthole was created in 2010 as a collaboration between New Zealand’s Ministry for Primary Industries (MPI) and the National Institute for Water and Atmospheric Research (NIWA) to provide greater public access to information and data on nonindigenous marine species (NIMS) in N ...
INTRODUCTION - (CRSSA), Rutgers University
... Northern Great Basin from here on) showed a deviation from the “relaxation model” too. Grayson & Livingston (1993) observed the species that were fully isolated to montane patches in Brown’s (1971) study, in the intermountain matrix. The matrix in the Northern Great Basin is also mostly xeric scrub, ...
... Northern Great Basin from here on) showed a deviation from the “relaxation model” too. Grayson & Livingston (1993) observed the species that were fully isolated to montane patches in Brown’s (1971) study, in the intermountain matrix. The matrix in the Northern Great Basin is also mostly xeric scrub, ...
... were examined in relation to several potential explanatory variables: ecological conditions in their African wintering grounds and pass areas, as reflected by the normalized difference vegetation index (NDVI), together to ambient temperature in their pass areas. Ecological conditions in wintering ar ...
Tempo and mode of speciation in the Baja California disjunct fish
... The Baja California region provides a natural setting for studying the early mechanisms of allopatric speciation in marine systems. Disjunct fish populations from several species that occur in the northern Gulf of California and northern Pacific coast of Baja California, but are absent from its sout ...
... The Baja California region provides a natural setting for studying the early mechanisms of allopatric speciation in marine systems. Disjunct fish populations from several species that occur in the northern Gulf of California and northern Pacific coast of Baja California, but are absent from its sout ...
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.