نتایج جستجو برای: multi species forests

تعداد نتایج: 1027675  

Journal: :دانش گیاه پزشکی ایران 0
حامد غباری دانشجوی سابق دکتری حشره شناسی پردیس کشاورزی و منابع طبیعی دانشگاه تهران و استادیار دانشگاه شهر جاماسب نوذری استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسین الهیاری دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مارک کالاشیان استاد انستیتوی جانورشناسی ارمنستان

buprestid beetles are one of the important components of the biodiversity of forest ecosystem in kurdistan province. different characteristics of biodiversity of buprestid beetles were studied by use of window trap, colored pan and colored sticky trap in these forests during 2009 and 2010. a total of 1205 specimens of 44 species were caught by use of considered traps during appearance of adults...

Journal: رستنیها 2011

Nineteen species of mostly epiphytic lichens from the forests of Nowshahr and Royan located in Mazandaran province (N Iran) are reported. Three species, Ochrolechia pallescens, Phaeophyscia confusa and Usnea longissima, are newly reported for lichenized mycota of Iran and seven species are new to the province. Additionally, a short history of lichenological exploration in the Hyrcanian forest i...

2005
Peter Duelli Vasyl Chumak Martin K. Obrist Peter Wirz

What makes virgin forests better forests? Biodiversity evaluation depends on the value systems of the stakeholders involved. Indicators for conservation value, ecosystem functions, wilderness, uniqueness, or species richness may not correlate, or even correlate negatively. Based on arthropod data from a comparative study in two types of virgin forests in core areas of the Carpathian Biosphere R...

Journal: :International Journal of Environmental Studies 2022

The study focuses on the diversity of native species from which can be selected potential in Bung Jagoi community forests for reforestation. Multi-aged regeneration survey using nested plot design was carried out four types forest forests. findings indicate that intact and undisturbed primary are more diverse hold a number with higher importance value than disturbed also have abundant

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2003
A S De Luca H L Vasconcelos T V Barrett

We studied the distribution of sandflies (Diptera: Phlebotominae)--insect vectors of several diseases, including leishmaniasis--at the interface between primary forest and cattle pasture and between primary forest and secondary forest (< 15 yr old) in Southern Brazilian Amazonia. Sandflies were collected by using a combination of light traps and traps having vertebrates as baits. Strong differe...

2005
David A. King S. Joseph Wright Joseph H. Connell

Maximum height was assessed for tree species from seven temperate deciduous forests, one subtropical forest and one tropical forest and combined with published tree heights for three other tropical forests. The temperate deciduous forests showed a strong concentration of canopy species and a dearth of subcanopy species. In contrast, the four tropical forests showed more uniform distributions of...

2013
Ivar Vleut Samuel Israel Levy-Tacher Willem Frederik de Boer Jorge Galindo-González Luis-Bernardo Vazquez

Most studies on frugivorous bat assemblages in secondary forests have concentrated on differences among successional stages, and have disregarded the effect of forest management. Secondary forest management practices alter the vegetation structure and fruit availability, important factors associated with differences in frugivorous bat assemblage structure, and fruit consumption and can therefor...

The main purpose of this study is to investigate the quantitative and qualitative characteristics of dominant tree species and their regeneration status in the Arasbaran forests. Data were collected by transect sampling and regeneration was assessed by plot with an area 100 m2. In the sample plots, we recorded information on species type, diameter at breast height, height, quality of seedlings ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
E Marín-Spiotta R Ostertag W L Silver

Primary tropical forests are renowned for their high biodiversity and carbon storage, and considerable research has documented both species and carbon losses with deforestation and agricultural land uses. Economic drivers are now leading to the abandonment of agricultural lands, and the area in secondary forests is increasing. We know little about how long it takes for these ecosystems to achie...

2015
Tomasz Durak Roma Durak Ewa Węgrzyn Konrad Leniowski Brian J. Palik Eric J. Jokela

The Carpathians are Eastern Europe’s largest contiguous forest ecosystem and a hotspot of biodiversity. However, not much is known about changes in species diversity in these forests. Here we investigate the long-time changes in the diversity of plant communities in the Eastern Carpathian beech forests. We also inquire about the similarity of plant communities between managed and protected fore...

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