Results 21 to 30 of about 107,594 (348)

Effect of forest structure changes on permutation and diversity of corticolous lichens (case study: Kheiroud forest, Nowshahr) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2013
Although quite a few studies have been done in respect to forest structure and development in Iran, there is no study dealing with the evolution of lichens at different stages of forest development.
Majid Eshagh Nimvari, Asadollah Mattaji
doaj   +1 more source

Species richness and evenness in Australian birds

open access: yes, 2008
Species richness and evenness are the two major components of biodiversity, but the way in which they are interrelated is a subject of contention. We found a negative relationship between the two variables for bird communities at 92 woodland sites across
Johnson, Christopher N.   +1 more
core   +3 more sources

Investigation on litter invertebrates diversity at natural forests and reforestations of hardwood and softwood in Mazandaran(Case study: Darabkola) [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2012
The most important role of the litter invertebrates is leaf litter decomposition and helping of nutrient elements cycling. The objective of this study was to evaluate litter invertebrates dversity within 20 years old plantations of alder (Alnus ...
Shirzad Mohammadnezhad Kiasari   +3 more
doaj   +1 more source

IDENTIFICATION OF THE MOLUCCAN MEGAPODE (Eulipoa wallacei) NATURAL HABITAT IN HARUKU ISLAND, INDONESIA AND ITS VEGETATION COMPOSITION

open access: yesBiotropia: The Southeast Asian Journal of Tropical Biology, 2023
The characteristics of island vegetation greatly influence the activities of endemic birds in island areas, such as the Moluccan endemic megapodes (Eulipoa wallacei) on Haruku Island.
Handy Erwin Pier Leimena   +2 more
doaj   +1 more source

Niche partitioning and the storage effect facilitate coexistence in an amphibian community

open access: yesEcology and Evolution, 2023
Virtually all natural community assemblages are dominated by a handful of common species. Dominant species can exert negative impacts on biodiversity through competitive exclusion, and thus there is a strong incentive to understand imbalances in ...
George C. Brooks   +3 more
doaj   +1 more source

Species Diversity Induces Idiosyncratic Effects on Litter Decomposition in a Degraded Meadow Steppe

open access: yesFrontiers in Environmental Science, 2021
Litter decomposition is a fundamental path for nutrient cycling in a natural ecosystem. However, it remains unclear how species diversity, including richness and evenness, affects the decomposition dynamics in the context of grassland degradation.
Iqra Naeem   +8 more
doaj   +1 more source

Nonnegative Matrix Factorization With Data-Guided Constraints For Hyperspectral Unmixing

open access: yesRemote Sensing, 2017
Hyperspectral unmixing aims to estimate a set of endmembers and corresponding abundances in pixels. Nonnegative matrix factorization (NMF) and its extensions with various constraints have been widely applied to hyperspectral unmixing.
Risheng Huang, Xiaorun Li, Liaoying Zhao
doaj   +1 more source

Mapping breeding birds in a re-naturalized historical fortress: composition, structure and considerations about abundance vs. biomass comparisons

open access: yesRivista Italiana di Ornitologia - Research in Ornithology, 2023
Using the mapping method, I obtained data about a rich, even and diversified breeding bird assemblage inhabiting an abandoned and re-naturalized historical military fortress (Rome, central Italy).
Corrado Battisti
doaj   +1 more source

Changes in Richness and Species Composition after Five Years of Grazing Exclusion in an Endemic Pasture of Northern Mexico

open access: yesLand, 2022
A well-managed grazing system improves the productivity and health, and it is important to promote sustainability. We analyzed the impact of grazing on the Sierra de Zapalinamé protected area in north Mexico.
José Ramón Arévalo   +4 more
doaj   +1 more source

Partitions, their classes, and multicolour evenness

open access: yes, 2022
We extend the theory of maximally even sets to determine the evenness of partitions of the chromatic universe (Formula presented.). Interactions measure the average evenness of colour sets (partitioning sets) of (Formula presented.).
Peck, Robert   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy