An Essay on Some Topics Concerning Invasive
... islands, oceans and lakes. These independent colonization events were sporadic and infrequent, but over the millennia of the Earth’s history, their numbers were large and their impact on global biodiversity was great. Truly oceanic islands formed as isolated volcanoes, so all inhabitants are descend ...
... islands, oceans and lakes. These independent colonization events were sporadic and infrequent, but over the millennia of the Earth’s history, their numbers were large and their impact on global biodiversity was great. Truly oceanic islands formed as isolated volcanoes, so all inhabitants are descend ...
Large-scale processes and the Asian bias in species
... temperate forest (warm and cool temperate climate groups C and D), distributed in 13 geographically distinct patches, including areas isolated by water on the Korean Peninsula and Japan (Fig. 2). Extensive tropical and subtropical forests at lower elevation separate temperate forests at higher eleva ...
... temperate forest (warm and cool temperate climate groups C and D), distributed in 13 geographically distinct patches, including areas isolated by water on the Korean Peninsula and Japan (Fig. 2). Extensive tropical and subtropical forests at lower elevation separate temperate forests at higher eleva ...
S23-1 The history of the biological species concept 1 Introduction 2
... species”. During the 1860s H. W. Bates and A. R. Wallace (1864: 158–159) were of the opinion that a new species would be produced “if a slight variety had become fixed as a local form, and afterwards been brought into contact with the parent species, with little or no intermixture of the two.” The n ...
... species”. During the 1860s H. W. Bates and A. R. Wallace (1864: 158–159) were of the opinion that a new species would be produced “if a slight variety had become fixed as a local form, and afterwards been brought into contact with the parent species, with little or no intermixture of the two.” The n ...
Chapter4 - Threats to biological diversity III
... Introduced to Africa from Asia in 1887 Disease was present in Indian cattle imported to the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern ...
... Introduced to Africa from Asia in 1887 Disease was present in Indian cattle imported to the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern ...
Trophic Level Effects on Species Diversity in Arthropod
... richness in the coppice, while differences between insect orders were due to greater evenness of individuals in the Hymenoptera. Since the Coleoptera were principally herbivores and the Hymenoptera predator-parasites, results can be interpreted in a trophic level context. It is suggested that, in a ...
... richness in the coppice, while differences between insect orders were due to greater evenness of individuals in the Hymenoptera. Since the Coleoptera were principally herbivores and the Hymenoptera predator-parasites, results can be interpreted in a trophic level context. It is suggested that, in a ...
BCB341_Chapter4a_threats_to_biodiversity_exotic_species
... Introduced to Africa from Asia in 1887 Disease was present in Indian cattle imported to the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern ...
... Introduced to Africa from Asia in 1887 Disease was present in Indian cattle imported to the east coast of Africa to feed the Italian army, which was invading Ethiopia at the time Quickly spread to local cattle and wildlife populations From there the disease swept across eastern and southern ...
Concepts of keystone species and species importance in ecology
... The term of keystone species was first introduced by Robert T. Pain in 1969, and originally applied to a top predator. The keystone species was defined as: The species composition and physical appearance in a community or ecosystem were greatly modified by the activities of a single native species i ...
... The term of keystone species was first introduced by Robert T. Pain in 1969, and originally applied to a top predator. The keystone species was defined as: The species composition and physical appearance in a community or ecosystem were greatly modified by the activities of a single native species i ...
New stands of species of the Paramecium aurelia
... third with P. triaurelia and P. octaurelia (small pond in Kwazulu Natal, Lemombo Mts, SA 13). The water in the last two habitats was eutrophic due to excrement of antelope or cows. Nevertheless, the finding of three species of the complex in a sample of less than 50 ml is significant. Previously, we ...
... third with P. triaurelia and P. octaurelia (small pond in Kwazulu Natal, Lemombo Mts, SA 13). The water in the last two habitats was eutrophic due to excrement of antelope or cows. Nevertheless, the finding of three species of the complex in a sample of less than 50 ml is significant. Previously, we ...
V) Maintenance of species diversity
... i) If KA (carrying capacity for species A) is lower than population size of species A that would exclude species B and vice versa, both species will coexist ...
... i) If KA (carrying capacity for species A) is lower than population size of species A that would exclude species B and vice versa, both species will coexist ...
Project Title: Investigators: Project Summary
... overlaying soils and topographic features in a GIS environment such that 8 major "ecozones" were identified. Based on this ecozone analysis, the majority (74%) of the ranch was found to be occupied by upland habitats that are relatively level and underlain by either Comfort-Rock soil (29% of the are ...
... overlaying soils and topographic features in a GIS environment such that 8 major "ecozones" were identified. Based on this ecozone analysis, the majority (74%) of the ranch was found to be occupied by upland habitats that are relatively level and underlain by either Comfort-Rock soil (29% of the are ...
Chapter 45 book - Castle High School
... Figure 45.10 Species and Functional Group Diversity Affect Grassland Productivity (Part 1) ...
... Figure 45.10 Species and Functional Group Diversity Affect Grassland Productivity (Part 1) ...
The vegetation of the tropical dry forest of the Cali Botanical Garden
... von Humboldt 1997). The Bs-T represents about 50% of the forested areas of Central America and 22% of South America (Murphy & Lugo 1986). In Colombia this formation is found in the Caribbean region and in the interandean valleys of the rivers Magdalena and Cauca in an area which presumably covered a ...
... von Humboldt 1997). The Bs-T represents about 50% of the forested areas of Central America and 22% of South America (Murphy & Lugo 1986). In Colombia this formation is found in the Caribbean region and in the interandean valleys of the rivers Magdalena and Cauca in an area which presumably covered a ...
Printable profile - The Xerces Society
... Habitat: Acidic Sphagnum bogs in forested regions are the primary habitat for this species. It tends to be found in floating mats of Sphagnum immediately adjacent to the open water of bogs and lakes (Johnson 1979). Marginal habitat includes small patches of Sphagnum at springs and in the backwaters ...
... Habitat: Acidic Sphagnum bogs in forested regions are the primary habitat for this species. It tends to be found in floating mats of Sphagnum immediately adjacent to the open water of bogs and lakes (Johnson 1979). Marginal habitat includes small patches of Sphagnum at springs and in the backwaters ...
(3) 381 Animals to Prosimians and Tarsiers
... Facial expression: less range possible (than for Haplorhini), partially because of attached upper lip Grooming "claw" on pedal digit (2nd digit) Teeth –! dental formula (with some exceptions): 2133/2133 –! dental comb: elongated incisors used for grooming –! NOTE: these adaptations for autogrooming ...
... Facial expression: less range possible (than for Haplorhini), partially because of attached upper lip Grooming "claw" on pedal digit (2nd digit) Teeth –! dental formula (with some exceptions): 2133/2133 –! dental comb: elongated incisors used for grooming –! NOTE: these adaptations for autogrooming ...
local and regional diversity in some aegean land snail faunas
... Figure 1 shows the area of study, and the approximate location of sample sites. While the area is now extensively fragmented by the sea, it was part of a continuous land-mass in the early Miocene. Marine transgressions (11–9 My ago) established a midAegean channel which separated all three study reg ...
... Figure 1 shows the area of study, and the approximate location of sample sites. While the area is now extensively fragmented by the sea, it was part of a continuous land-mass in the early Miocene. Marine transgressions (11–9 My ago) established a midAegean channel which separated all three study reg ...
The effects of substrate types on species diversity
... substrate types ● Highest diversity on rocky substrate ...
... substrate types ● Highest diversity on rocky substrate ...
Ring species as demonstrations of the continuum of species formation
... and morphological intergradation, while overlapping taxa at the terminus of the ring behave largely as sympatric, reproductively isolated species. Are ring species extremely rare or are they just difficult to detect? What conditions favour their formation? Modelling studies have attempted to address ...
... and morphological intergradation, while overlapping taxa at the terminus of the ring behave largely as sympatric, reproductively isolated species. Are ring species extremely rare or are they just difficult to detect? What conditions favour their formation? Modelling studies have attempted to address ...
as a PDF
... The structure and dynamics of the mosquito fauna from the Northern and Central regions of Israel and the Sinai ,Peninsula were described and reviewed by Margalit & Tahori (1973, 1974). However, information on the mosquito fauna of the Negev, in Southern Israel, is absent. The purpose of this paper i ...
... The structure and dynamics of the mosquito fauna from the Northern and Central regions of Israel and the Sinai ,Peninsula were described and reviewed by Margalit & Tahori (1973, 1974). However, information on the mosquito fauna of the Negev, in Southern Israel, is absent. The purpose of this paper i ...
Marine Aquaculture factsheet
... species have respectively prevailed over native oysters (Ostrea edulis) and clams (the grooved carpet shells Tapes decussatus) in the lagoons of the northern Adriatic Sea. These two species are also ...
... species have respectively prevailed over native oysters (Ostrea edulis) and clams (the grooved carpet shells Tapes decussatus) in the lagoons of the northern Adriatic Sea. These two species are also ...
Assessing the origin of Neotropical mountain dung
... their distribution (Hengeveld, 1997); or morpho-ecological adaptation, involving local adaptation to new conditions (Moritz et al., 2000). The effects of these processes are comparable with the biogeographical consequences of phylogenetic niche conservatism and niche evolution concepts (Wiens & Dono ...
... their distribution (Hengeveld, 1997); or morpho-ecological adaptation, involving local adaptation to new conditions (Moritz et al., 2000). The effects of these processes are comparable with the biogeographical consequences of phylogenetic niche conservatism and niche evolution concepts (Wiens & Dono ...
File
... Next were small animals, insects, and more diverse plants. They were able to establish as nutrients in soil allowed plants to grow meaning more food available ...
... Next were small animals, insects, and more diverse plants. They were able to establish as nutrients in soil allowed plants to grow meaning more food available ...
the 2003 Results
... The species richness at the Bronx Park study site in 2003 (27) compares favorably with what was found in the 2002 and 2004 breeding bird surveys at Riverdale and Seton Falls Parks. Riverdale had 27 species in 2002 and 24 in 2004, while Seton Falls had 30 species in 2002 and 28 in 2004. The overall H ...
... The species richness at the Bronx Park study site in 2003 (27) compares favorably with what was found in the 2002 and 2004 breeding bird surveys at Riverdale and Seton Falls Parks. Riverdale had 27 species in 2002 and 24 in 2004, while Seton Falls had 30 species in 2002 and 28 in 2004. The overall H ...
A spectacular new Philippine monitor lizard reveals a hidden
... sister taxon V. olivaceus, together with our new phylogenetic data, is key to our interpretation of the biogeographic and evolutionary history of these taxa. In hindsight, it is not surprising that the forested Sierra Madre Range supports an evolutionarily distinct lineage of monitor lizard. The nor ...
... sister taxon V. olivaceus, together with our new phylogenetic data, is key to our interpretation of the biogeographic and evolutionary history of these taxa. In hindsight, it is not surprising that the forested Sierra Madre Range supports an evolutionarily distinct lineage of monitor lizard. The nor ...
predicting species` geographic distributions based on
... produce component ‘‘rules’’ in a broader ruleset, and hence portions of the species’ distribution may be determined as within or without its niche, based on different rules from several algorithms. As such, GARP is a superset of other approaches, and should always have greater predictive ability tha ...
... produce component ‘‘rules’’ in a broader ruleset, and hence portions of the species’ distribution may be determined as within or without its niche, based on different rules from several algorithms. As such, GARP is a superset of other approaches, and should always have greater predictive ability tha ...
The Human Population Footprint on Global Biodiversity
... All else being equal, the future looks bleak for wild animals, plants, and ecosystems if we do nothing about human population growth. Using population projections with the 2010 model, the average nation with a growing population can expect a 3·3 percent increase in the number of threatened mammals a ...
... All else being equal, the future looks bleak for wild animals, plants, and ecosystems if we do nothing about human population growth. Using population projections with the 2010 model, the average nation with a growing population can expect a 3·3 percent increase in the number of threatened mammals a ...
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.