Observed Instances of Speciation
... his FAQ discusses several instances where speciation has been observed. It also discusses several issues related to speciation. I have divided this FAQ into several sections. Part 2 discusses several definitions of what a species is. Part 3 explains the context in which observations of speciation ar ...
... his FAQ discusses several instances where speciation has been observed. It also discusses several issues related to speciation. I have divided this FAQ into several sections. Part 2 discusses several definitions of what a species is. Part 3 explains the context in which observations of speciation ar ...
Deakin Research Online - DRO
... such responses to time since fire can predict the occurrence of species across broad spatial scales. We examined the response of bird species to time since fire in semiarid shrubland in southeastern Australia using data from surveys at 499 sites representing a 100-year chronosequence. We used nonlinea ...
... such responses to time since fire can predict the occurrence of species across broad spatial scales. We examined the response of bird species to time since fire in semiarid shrubland in southeastern Australia using data from surveys at 499 sites representing a 100-year chronosequence. We used nonlinea ...
THE POPULATION BIOLOGY OF INVASIVE SPECIES Ann K. Sakai
... fruits may also be good colonists. Phenotypic plasticity has often been cited as a life-history trait needed for colonization of new areas because colonists must be able to cope with a range of environmental conditions (Baker 1965, 1974, Gray 1986). Comparative and experimental studies of invasive s ...
... fruits may also be good colonists. Phenotypic plasticity has often been cited as a life-history trait needed for colonization of new areas because colonists must be able to cope with a range of environmental conditions (Baker 1965, 1974, Gray 1986). Comparative and experimental studies of invasive s ...
Common Name: TALLAPOOSA CRAYFISH Scientific Name
... insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and come out at night to feed. Reproduction usually occurs during the spring and fall, but males in reproductive condition may be found at any time during the year. When female ...
... insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and come out at night to feed. Reproduction usually occurs during the spring and fall, but males in reproductive condition may be found at any time during the year. When female ...
The Effects of Burmese Pythons on Everglades Ecosystems
... populations are high in the Everglades, becoming snake food is not the whole issue. The greatest concern that pertains to alligator populations is the fact that they are considered a keystone species because they are ecosystem engineers—or, a species that physically modifies and maintains the envir ...
... populations are high in the Everglades, becoming snake food is not the whole issue. The greatest concern that pertains to alligator populations is the fact that they are considered a keystone species because they are ecosystem engineers—or, a species that physically modifies and maintains the envir ...
A Community Matrix Analysis of Heliconia Insect Communities
... the dry season when few or no inflorescences of H . wagneriana and H . imbricata are available for insect oviposition and feeding. In addition, larval development times are close to the length of time an inflorescence survives on a plant. Insects emerging as adults from one inflorescence will ovipos ...
... the dry season when few or no inflorescences of H . wagneriana and H . imbricata are available for insect oviposition and feeding. In addition, larval development times are close to the length of time an inflorescence survives on a plant. Insects emerging as adults from one inflorescence will ovipos ...
Population structure and species dynamics of Spisula
... in 2001e2002 along a depth gradient in Ancão Peninsula, Algarve coast. Within the macrobenthic community sampled, Spisula solida, a commercial clam, Diogenes pugilator and Branchiostoma lanceolatum, both non-target species, were recognized as common species. Spisula solida is one of the most harves ...
... in 2001e2002 along a depth gradient in Ancão Peninsula, Algarve coast. Within the macrobenthic community sampled, Spisula solida, a commercial clam, Diogenes pugilator and Branchiostoma lanceolatum, both non-target species, were recognized as common species. Spisula solida is one of the most harves ...
What is the Conservation Value of a Plant in a Botanic Garden
... 2010). With the goal to establish and maintain an ex situ collection of living plants that has direct, on-the-ground conservation value for natural populations (Havens et al., 2004b), we began by a better understanding of the Arboretum’s current living collections in light of plant conservation, and ...
... 2010). With the goal to establish and maintain an ex situ collection of living plants that has direct, on-the-ground conservation value for natural populations (Havens et al., 2004b), we began by a better understanding of the Arboretum’s current living collections in light of plant conservation, and ...
Ramsar site management plans -- Australia, Towra Point, NSW
... action is eroding its unique landforms, forests and wetlands. The nature reserve suffers from the ongoing impacts of introduced plants and animals, camping, horse riding, and boating and other recreational activities in and on the periphery of the reserve. The reserve is yet to be consolidated, bein ...
... action is eroding its unique landforms, forests and wetlands. The nature reserve suffers from the ongoing impacts of introduced plants and animals, camping, horse riding, and boating and other recreational activities in and on the periphery of the reserve. The reserve is yet to be consolidated, bein ...
Similarity and difference in vegetation structure of three desert shrub
... Whitford, 2002; Ward, 2009). Shrubs are a major component of desert vegetation and a key biological resource in the recovery and reconstruction of degraded desert ecosystems where they are of great importance for animal husbandry, soil improvement and as windbreaks for sand stabilisation (Aich, 1991 ...
... Whitford, 2002; Ward, 2009). Shrubs are a major component of desert vegetation and a key biological resource in the recovery and reconstruction of degraded desert ecosystems where they are of great importance for animal husbandry, soil improvement and as windbreaks for sand stabilisation (Aich, 1991 ...
Middle Rio Grande Basin
... fire risk, remove exotic plants, or restore some aspect of a complex ecosystem. Some work better than others. Some can have unintended, negative outcomes. “We need to understand how the many components of the Middle Rio Grande Basin ecosystems — the water quality, soil quality, plant growth rates, f ...
... fire risk, remove exotic plants, or restore some aspect of a complex ecosystem. Some work better than others. Some can have unintended, negative outcomes. “We need to understand how the many components of the Middle Rio Grande Basin ecosystems — the water quality, soil quality, plant growth rates, f ...
the role of competition in structuring ant communities: a review
... species have an aggregated spatial distribution, which would increase competition among individuals and the species’ coexistence with subordinate species. Beyond these two, there are the trade-off and the mosaic theories, which involve competition and promote coexistence, and also the null models, w ...
... species have an aggregated spatial distribution, which would increase competition among individuals and the species’ coexistence with subordinate species. Beyond these two, there are the trade-off and the mosaic theories, which involve competition and promote coexistence, and also the null models, w ...
rhododendron poisons the soil, doesn`t it?
... planet are dependent to a greater (many obligately) or lesser degree upon a community of soil fungi with which they form symbioses in their roots (mycorrhizas). I will concentrate on mycorrhiza because it is what I know about.16 An author with a different speciality might choose bacterial, nematode ...
... planet are dependent to a greater (many obligately) or lesser degree upon a community of soil fungi with which they form symbioses in their roots (mycorrhizas). I will concentrate on mycorrhiza because it is what I know about.16 An author with a different speciality might choose bacterial, nematode ...
Community assembly, coexistence and the environmental filtering
... 1. One of the most pervasive concepts in the study of community assembly is the metaphor of the environmental filter, which refers to abiotic factors that prevent the establishment or persistence of species in a particular location. The metaphor has its origins in the study of community change during ...
... 1. One of the most pervasive concepts in the study of community assembly is the metaphor of the environmental filter, which refers to abiotic factors that prevent the establishment or persistence of species in a particular location. The metaphor has its origins in the study of community change during ...
Native fauna - Landcare Research
... In the heart of Wellington lies the ZEALANDIA Karori Sanctuary. An 8.6-km predator-proof fence surrounds 225 ha of regenerating lowland forest and wetlands. The goal is to reintroduce native fauna characteristic of the southern lowland North Island, both before human settlement and naturally establi ...
... In the heart of Wellington lies the ZEALANDIA Karori Sanctuary. An 8.6-km predator-proof fence surrounds 225 ha of regenerating lowland forest and wetlands. The goal is to reintroduce native fauna characteristic of the southern lowland North Island, both before human settlement and naturally establi ...
TOWRA POINT NATURE RESERVE PLAN OF MANAGEMENT NSW
... recreational use. Severe wave action is eroding its unique landforms, forests and wetlands. The nature reserve suffers from the ongoing impacts of introduced plants and animals, camping, horse riding, and boating and other recreational activities in and on the periphery of the reserve. The reserve i ...
... recreational use. Severe wave action is eroding its unique landforms, forests and wetlands. The nature reserve suffers from the ongoing impacts of introduced plants and animals, camping, horse riding, and boating and other recreational activities in and on the periphery of the reserve. The reserve i ...
State of the Birds 2013
... This document opens the “black box” of our recovery planning process, and chooses a focal declining species to demonstrate the complexity of prioritizing recovery actions. For each focal species, we look at recommended actions for that breeding bird in other states, and the specific conservation cha ...
... This document opens the “black box” of our recovery planning process, and chooses a focal declining species to demonstrate the complexity of prioritizing recovery actions. For each focal species, we look at recommended actions for that breeding bird in other states, and the specific conservation cha ...
Alien plants in checklists and floras: towards better communication
... among aliens), the majority of the flora would appear on such a list since in contemporary highly disturbed landscapes many native plants occur at least partly in disturbed and human-made sites. In the same vein, a native plant (or a hybrid between two native plants), is still native, even if it now ...
... among aliens), the majority of the flora would appear on such a list since in contemporary highly disturbed landscapes many native plants occur at least partly in disturbed and human-made sites. In the same vein, a native plant (or a hybrid between two native plants), is still native, even if it now ...
Pfeiffer et al. 2003
... influence of low temperatures on plant and animal life. In hot arid sites, where most previous desert ant studies have been conducted, species richness of ants is often correlated with the rainfall gradient, as productivity in these regions is coupled to precipitation (e.g. Davidson, 1977; Marsh, 19 ...
... influence of low temperatures on plant and animal life. In hot arid sites, where most previous desert ant studies have been conducted, species richness of ants is often correlated with the rainfall gradient, as productivity in these regions is coupled to precipitation (e.g. Davidson, 1977; Marsh, 19 ...
Discoveries of new mammal species and their
... characterized by the uncovering of vast new elements of biodiversity, which are the fundamental building blocks of ecosystems, and thus the provision of ecosystem goods and services. There are thousands of examples of unexpected discoveries of new taxa across broad taxonomic and geographic spectra, ...
... characterized by the uncovering of vast new elements of biodiversity, which are the fundamental building blocks of ecosystems, and thus the provision of ecosystem goods and services. There are thousands of examples of unexpected discoveries of new taxa across broad taxonomic and geographic spectra, ...
Distribution and Reproductive Characteristics of Nonindigenous and
... collected in or around harbors and gradually dispersed to neighboring areas. However, there is little information on the current distribution patterns of these plants throughout the Hawaiian Islands. To determine if these nonindigenous algae (or invasive indigenous species) are indeed posing threats ...
... collected in or around harbors and gradually dispersed to neighboring areas. However, there is little information on the current distribution patterns of these plants throughout the Hawaiian Islands. To determine if these nonindigenous algae (or invasive indigenous species) are indeed posing threats ...
diel and seasonal variation in species composition and abundance
... with population lows in October and November and again in February and March. Caridean densities estimated in this study (overall, 16 shrimps/m- of sampling effort in day samples, 49/m 2 in night samples) are much higher than those of most previous studies in seagrasses. The small mesh net used (I m ...
... with population lows in October and November and again in February and March. Caridean densities estimated in this study (overall, 16 shrimps/m- of sampling effort in day samples, 49/m 2 in night samples) are much higher than those of most previous studies in seagrasses. The small mesh net used (I m ...
Faculty of Life and Environmental Sciences University of
... germination (Malo et al. 1995). Species dispersed in sheep dung amongst these small-scale disturbances may be provided an environmental advantage, especially so in the harsh conditions found in areas of primary succession, I studied the role of ungulate endozoochory as a dispersal mechanism in prima ...
... germination (Malo et al. 1995). Species dispersed in sheep dung amongst these small-scale disturbances may be provided an environmental advantage, especially so in the harsh conditions found in areas of primary succession, I studied the role of ungulate endozoochory as a dispersal mechanism in prima ...
Ecological effects of invasive alien insects
... biodiversity through direct interactions, e.g. a herbivore feeding on a native plant (Jenkins 2003), a predator or a parasitoid attacking a native prey or host (Boettner et al. 2000; Snyder and Evans 2006), an alien species hybridizing with a native species (Jensen et al. 2005), etc. They can also a ...
... biodiversity through direct interactions, e.g. a herbivore feeding on a native plant (Jenkins 2003), a predator or a parasitoid attacking a native prey or host (Boettner et al. 2000; Snyder and Evans 2006), an alien species hybridizing with a native species (Jensen et al. 2005), etc. They can also a ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.