Results 61 to 70 of about 6,368,094 (187)

Surveying abundance and stand type associations of Formica aquilonia and F. lugubris (Hymenoptera: Formicidae) nest mounds over an extensive area: Trialing a novel method

open access: yesEuropean Journal of Entomology, 2012
Red wood ants are ecologically important members of woodland communities, and some species are of conservation concern. They occur commonly only in certain habitats in Britain, but there is limited knowledge of their numbers and distribution.
Kerry M. BORKIN   +2 more
doaj   +1 more source

Nonparametric Methods for Line Transect Surveys in the Presence of Measurement Errors

open access: yes, 2016
We consider the estimation of animal density by distance sampling line transect survey when the data of sighting distances are contaminated with measurement errors.
Fei-Yin Chen; Lu-Fang Chen; Wen-Han Hwang; Yih-Huei Huang
core   +1 more source

Sampling scale and season influence the observed relationship between the density of deer and questing Ixodes ricinus nymphs

open access: yesParasites & Vectors, 2020
Background The relationship between environmentally transmitted tick parasites, Ixodes spp., and their main reproductive host, deer, is generally thought to be positive.
Eleanor R Dickinson   +2 more
doaj   +1 more source

The Uniformly Most Powerful Invariant Test for the Shoulder Condition in Point Transect Sampling [PDF]

open access: yes
Estimating population abundance is of primary interest in wildlife population studies. Point transect sampling is a well established methodology for this purpose.
Riccardo Borgoni, Piero Quatto
core  

Transect-rapport 2509: Archeologisch Bureauonderzoek. Vleuten De Meern, De Milan Viscontipark, Gemeente Utrecht.

open access: yes, 2020
In december 2019 is een archeologisch vooronderzoek uitgevoerd in een plangebied in De Milan Viscontipark in De Meern (gemeente Utrecht). Het onderzoek is uitgevoerd in de vorm van een archeologisch bureauonderzoek (BO).
Bussel, A.T.L.E. van (Transect)
core   +1 more source

Study of the existence of algae, diversity of species, density, and distribution patterns in Meras waters

open access: yesJurnal Ilmiah Platax
This study aims to determine macroalgae species and analyze the index of diversity, density, dominance, and distribution patterns around the waters of Meras Village, Bunaken District, Manado. This research was carried out for 4 months starting from July
Delarosa Kalalembang   +5 more
doaj   +1 more source

Population Studies and Carrageenan Properties in Eight Gigartinales (Rhodophyta) from Western Coast of Portugal

open access: yesThe Scientific World Journal, 2013
Eight carrageenophytes, representing seven genera and three families of Gigartinales (Florideophyceae), were studied for 15 months. The reproductive status, dry weight, and carrageenan content have been followed by a monthly random sampling. The highest
Leonel Pereira
doaj   +1 more source

JENIS LICHENES DI KAWASAN GUGOP PULO BREUH KECAMATAN PULO ACEH KABUPATEN ACEH BESAR

open access: yesBiotik: Jurnal Ilmiah Biologi Teknologi dan Kependidikan, 2018
The purpose of this research is to know the type of Lichens in the Gugop Pulo Breuh area, Pulo Aceh District, Aceh Besar. The subjects of this study are all types of Lichens found in the Gugop Pulo Breuh area, Pulo Aceh District, Aceh Besar.
Mulyadi Mulyadi
doaj   +1 more source

DISTRIBUSI HORIZONTAL MOLUSKA DI KAWASAN PADANG LAMUN PANTAI MERTA SEGARA SANUR, DENPASAR

open access: yesJurnal Biologi Udayana, 2014
A research on spatial distribution of Mollusc inhabitant seagrass bed at Merta Segara Beach Sanur, Denpasar was carried out from October to December 2012. The study site is well recognized as a place of tourist activities.
Buya Azmedia Istiqlal   +2 more
doaj  

Humpback whale Megaptera novaeangliae (Cetartiodactyla: Balaenopteridae) group sizes in line transect ship surveys: An evaluation of observer errors

open access: yesZoologia (Curitiba), 2016
Accurate estimates of group sizes through line transect sampling methods are important to correctly ascertain the abundance of animals that occur in groups.
Guilherme A. Bortolotto   +3 more
doaj   +1 more source

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