A classification of major natural habitats of Amazonian white-water river floodplains (várzeas)

2012 ◽  
Vol 20 (6) ◽  
pp. 461-475 ◽  
Author(s):  
Wolfgang J. Junk ◽  
Maria Teresa Fernandez Piedade ◽  
Jochen Schöngart ◽  
Florian Wittmann
Keyword(s):  
Natural Habitats ◽  
River Floodplains ◽  
White Water

A classification of the major habitats of Amazonian black-water river floodplains and a comparison with their white-water counterparts

2015 ◽  
Vol 23 (4) ◽  
pp. 677-693 ◽  
Author(s):  
Wolfgang J. Junk ◽  
Florian Wittmann ◽  
Jochen Schöngart ◽  
Maria T. F. Piedade
Keyword(s):  
Black Water ◽  
River Floodplains ◽  
White Water ◽  
Black Water River

scholarly journals Assessment of relationship between biometric characteristics of stone and crown morphotype of Prunus Pumila L.

2021 ◽  
Vol 38 ◽  
pp. 00072
Author(s):  
Mikhail Lezin ◽  
Larisa Ufimtseva
Keyword(s):  
Acidic Soils ◽  
Natural Habitats ◽  
Significance Level ◽  
First Case ◽  
Significant Difference ◽  
Different Types ◽  
Length Width ◽  
Plant Habit ◽  
Chelyabinsk Region

Prunus pumila is an introductory species with a disjunctive culturing area, which is caused by the instability of plants to rotting on waterlogged soils with unstable winters and high snow cover. One of the varieties of Prunus pumila in natural habitats grows on acidic soils and sometimes in wetlands. In the introduction population of the Chelyabinsk region, not all varieties could take part in the formation of the introduction population. In terms of stone shape and plant habit, no specimens matching the description of the P. pumila var. depressa variety could be identified. On the basis of the classification of plant morphotypes developed by us it was possible in some cases to obtain significant differences in the distribution of stone indices in groups with different types of crowns. The maximum differences were found in groups with the crown type of raised shrub and tree shrub for the index length / width and length / thickness of the stone. In the first case, a significant difference was obtained at the 1% significance level (tf = 2.81), and in the second even at the 0.1% significance level (tf = 3.78).

Dynamic and Structure Profiling of Kampar River, Slim River and Sungkai River: White Water Recreation Rivers in the State of Perak, Malaysia

2021 ◽  
Vol 12 (3) ◽  
pp. 428-431
Author(s):  
Jaffry Zakaria Et.al
Keyword(s):  
Geographical Location ◽  
Peninsular Malaysia ◽  
The State ◽  
Difficulty Level ◽  
Standard Scale ◽  
Water Recreation ◽  
Tourism Activity ◽  
White Water ◽  
Main Attraction

In Malaysia, there are many rivers that are being the attraction for white water river activities. Perak, is a state on the west of Peninsular Malaysia has several rivers that are suitable for white water river activities and being among the favourite location for white water river activities enthusiasts. Among the well-known white water rivers in Perak state are Kampar River, Slim River, Sungkai River, Singgor River and Sungai Bernam River. The attraction of a white water  river  depends  on  several  factors.  One of the important factor is the classification of rapid difficulty level. To date, the classification of rapid difficulty level in Malaysia is based on the international standard scale and certified by The International Canoe Federation (ICF). Apart from that, other attraction factors such as river water quality, geographical location, logistics facilities, transportation access, facilities, operator reputations and promotions are among other attraction factors. This present study aims to identify the main attraction  factors  in  the white water rivers in  Perak  State.  Dynamic and structure profiling of the rivers was produced. The white water rivers selected in this study were Kampar River, Slim River and Sungkai River. From the study, Kampar River was identified to be the most preferred river for white water activities compared to Slim River and Sungkai River. Findings from the study was resourceful in the effort of constructing a complete profile of white water rivers structure located in the state of Perak besides promoting white water river activities as a structured recreational tourism activity in Perak.

scholarly journals A survey of anthocyanins VII. The natural selection of flower colour

1941 ◽  
Vol 130 (858) ◽  
pp. 113-126 ◽  
Keyword(s):  
Natural Selection ◽  
Flower Colour ◽  
Morphological Classification ◽  
Natural Habitats ◽  
Tropical Plants ◽  
Flower Pigments ◽  
Derivatives Of ◽  
Subtropical Species ◽  
Selection Of

The anthocyanins have been identified in the flowers, fruits or leaves of approximately 200 species of plants. The results have been combined with earlier data, to ascertain the frequency with which derivatives of the three main anthocyanidin types occur as flower pigments among the species so far examined. Classification of the natural habitats of the species examined shows that pelargonidin derivatives predominate in the flowers of tropical and subtropical species, while delphinidin derivatives are the commonest in temperate and alpine plants. The colours of tropical and subtropical flowers containing cyanidin or delphinidin derivatives are generally redder than those of temperate species containing the same anthocyanin. It is concluded that red-flowered forms have a greater survival value than blue in most tropical plants. On the basis of the anthocyanin present in the flowers of thirty-two species of Tulipa , the genus falls into two groups in accordance with the morphological classification.

Possibilities of soil spectroscopy for the classification of contaminated areas in river floodplains

2001 ◽  
Vol 3 (4) ◽  
pp. 337-344 ◽  
Author(s):  
Lammert Kooistra ◽  
Ron Wehrens ◽  
Lutgarde MC Buydens ◽  
Rob S.E.W. Leuven ◽  
Piet H Nienhuis
Keyword(s):  
River Floodplains

Hungarian landscape types: classification of landscapes based on the relative cover of (semi-) natural habitats

2011 ◽  
Vol 14 (4) ◽  
pp. 537-546 ◽  
Author(s):  
János Bölöni ◽  
Zoltán Botta-Dukát ◽  
Eszter Illyés ◽  
Zsolt Molnár
Keyword(s):  
Natural Habitats ◽  
Relative Cover ◽  
Landscape Types

scholarly journals Population Resilience of Small Mammals. Why it is Important and What it Depends On?

2020 ◽  
pp. 503-523
Author(s):  
N. A. Shchipanov
Keyword(s):  
Small Mammals ◽  
Species Abundance ◽  
Biological Species ◽  
Natural Habitats ◽  
Internal Factors ◽  
Basic Principles ◽  
Factors Affecting ◽  
School Based

Small mammals are an active component of ecosystems that supports energy and matter flows and they are responsible for both construction of and maintaining their habitat. Such activity is vital for human prosperity, as it supports the chemical and physical quality of the environment where the human is adapted as a biological species. The contemporary human activity has resulted in destruction of a number of natural habitats and, as a consequence, in drastic changes in the species abundance. Some species have become so abundant that pose problems for human health, agriculture, and industries. Some formerly common and even pest small mammals, on the contrary, have reduced in distribution and numbers and now fall in the category of vulnerable species. In both cases, ecologically-based management of populations is required to maintain an optimal abundance of various species. Effective ecologically-based management of populations could be based on the basic principles of population ecology. It implies our understanding of both external and internal factors affecting the population abundance. Here, I review some fundamental principles which could be applied to operational management of populations. Also, I focus on some specifics of population reactions which have been elaborated in the Russian ecological school. Based on the well-known principles of supporting the numbers of populations, I propose a classification of species in terms of their ability to provide and change the type of functions in local populations. My classification allows distinguishing three groups of species with predictable resilience of population. Fitted to various environmental instabilities, the species of these groups require different conservation tactics.

Classification of communities with invasive species in the Southern Urals. I. Communities with Ambrosia species

2011 ◽  
pp. 3-28 ◽  
Author(s):  
L. M. Abramova
Keyword(s):  
Invasive Species ◽  
North American ◽  
Southern Urals ◽  
Ambrosia Artemisiifolia ◽  
Natural Vegetation ◽  
The Southern Urals ◽  
River Floodplains ◽  
Stellarietea Mediae

Associations Ambrosietum trifidae, Ambrosietum artemisiifoliae, Carduo acanthoidis—Ambrosietum psylostachyae and eight derivate communities with a presence of invasive species of North-American origin from the genus Ambrosia L.: Ambrosia artemisiifolia L., A. psilostachya DC., A. trifida L. in the Southern Urals are described. The communities belong to six classes of synantropic and natural vegetation: Stellarietea mediae, Artemisietea vulgaris, Bidentetea tripartitae, Galio-Urticetea, Polygono arenastri—Poetea annae, Molinio-Arrhenatheretea. Two Ambrosia species are widely naturalizated along the river floodplains in southwest regions of Bashkortostan Republic.

scholarly journals Species Diversity of Lichens in the Province of Abra, Philippines

2016 ◽  
Vol 25 (1) ◽  
Author(s):  
Mary Joan T. Guzman ◽  
Robinson Q. Fabito
Keyword(s):  
Phenolic Compounds ◽  
Species Diversity ◽  
Natural Resources ◽  
Environmental Sustainability ◽  
Toxic Chemicals ◽  
Natural Habitats ◽  
Dichotomous Key ◽  
Medicinal Properties ◽  
Study Sites

The province of Abra is rich in natural resources. Environmental sustainability has been one of the advocacies to sustain enough resources to meet our needs. The study was conducted to determine the species diversity of lichens in the province of Abra, Philippines. Specifically, the study documented the species of lichens found in the study sites. The taxonomic classification of the lichen species was documented and identified using the Dichotomous Key for Lichens. Samples of lichens were collected by scraping them from the substrate. Results revealed that Abra could be a rich culture ground for lichens. From 10,659 collected individuals of lichens, 44 species came out. Parmtotremarubifaciens lichen appeared to have potential medicinal properties since phytosterol, phenolic compounds, and flavonoid were positive within it. Crustose type of lichens was the most abundant type having 25 species. Of all the 44 species of lichens, there were five species commonly found in all the 27 study sites. Lichens and their natural habitats should not be destroyed by logging, and the use of toxic chemicals that could contaminate the air should be avoided as well as burning of wastes.The province of Abra is rich in natural resources. Environmental sustainability has been one of the advocacies to sustain enough resources to meet our needs. The study was conducted to determine the species diversity of lichens in the province of Abra, Philippines. Specifically, the study documented the species of lichens found in the study sites. The taxonomic classification of the lichen species was documented and identified using the Dichotomous Key for Lichens. Samples of lichens were collected by scraping them from the substrate. Results revealed that Abra could be a rich culture ground for lichens. From 10,659 collected individuals of lichens, 44 species came out. Parmtotremarubifaciens lichen appeared to have potential medicinal properties since phytosterol, phenolic compounds, and flavonoid were positive within it. Crustose type of lichens was the most abundant type having 25 species. Of all the 44 species of lichens, there were five species commonly found in all the 27 study sites. Lichens and their natural habitats should not be destroyed by logging, and the use of toxic chemicals that could contaminate the air should be avoided as well as burning of wastes.

scholarly journals Terrestrial mammalian fauna (Eulipotyphla, Lagomorpha, Rodentia, Carnivora, Artiodactyla) of Lozen Mountain

2019 ◽  
Vol 2 ◽  
Author(s):  
Sirma Zidarova
Keyword(s):  
Conservation Status ◽  
Habitat Preferences ◽  
Natura 2000 ◽  
Mammalian Fauna ◽  
Pitfall Trapping ◽  
Natural Habitats ◽  
Live Trapping ◽  
High Species Richness ◽  
Natura 2000 Site

Field data on the terrestrial mammalian fauna (Eulipotyphla, Lagomorpha, Rodentia, Carnivora, Artiodactyla) of Lozen Мountain collected from 2005 untill 2019 were summarized. Several methods were used: live trapping, pitfall trapping, camera trapping, transects for signs (e.g. prints and scats), and visual observations. The investigation revealed relatively high species richness of the mammalian fauna in the area. The species composition of mammal associations in forested and open habitats, the conservation status and zoogeographic classification of the recorded species are presented. The distribution and habitat preferences of particular species (Neomys fodiens, Muscardinus avellanarius, Canis aureus, etc.) are discussed. The significance of the natural and the semi-natural habitats in Lozen Mountain for mammalian populations is considered. The main threats for the mammals and their habitats on the territory of Natura 2000 site “Lozenska planina” (BG0000165) are emphasized and recommendations for future management and monitoring activities are proposed.

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