Results 91 to 100 of about 350,382 (268)
The spreading front of invasive species in favorable habitat or unfavorable habitat [PDF]
arXiv, 2013 Spatial heterogeneity and habitat characteristic are shown to determine the asymptotic profile of the solution to a reaction-diffusion model with free boundary, which describes the moving front of the invasive species. A threshold value $R_0^{Fr}(D,t)$ is introduced to determine the spreading and vanishing of the invasive species. We prove that if $R_0^
arxiv
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 12, Page 1926-1939, December 2022., 2022 Abstract Stellate sturgeon (Acipenser stellatus) is a species of great conservation concern throughout its range. Over the past century, it has experienced a dramatic decline in abundance and distribution in the Black Sea basin. Information regarding the genetic structure of the species is very limited in the region, despite its crucial importance for ...
Daniela Nicoleta Holostenco +16 more
wiley +1 more source
Niat Individu Mengkonsumsi Sayur Organik di Kelurahan Sawojajar Kota Malang
Habitat, 2018 Tren baru di masyarakat dunia menjadikan masyarakat sadar akan gaya hidup sehat, sehingga mulai memperhatikan bahan pangan yang akan dikonsumsi. Sayur organik merupakan salah satu bahan pangan alami yang tidak terkontaminasi bahan kimia berbahaya, namun ...
Surya Delviola +2 more
doaj +1 more source
Suitability of Natura 2000 sites for threatened freshwater species under projected climate change
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 12, Page 1872-1887, December 2022., 2022 Abstract As part of the world's largest coordinated network of protected areas, Natura 2000, European Union member states designate special areas of conservation (SACs) to maintain or achieve favourable conservation status for imperilled aquatic species listed under Annex II of the Habitats Directive.
Timo Basen +4 more
wiley +1 more source
The Anatomical Record, Volume 306, Issue 1, Page 5-28, January 2023., 2023 Abstract Antlers are the most conspicuous trait of cervids and have been used in the past to establish a classification of their fossil and living representatives. Since the availability of molecular data, morphological characters have generally become less important for phylogenetic reconstructions.
Nicola S. Heckeberg +2 more
wiley +1 more source
The Anatomical Record, EarlyView., 2023 Abstract Based on histological cross‐sections, the chondrocranium of the common musk turtle (Sternotherus odoratus) was reconstructed, described, and compared with other turtles. It differs from that of other turtle chondrocrania by possessing elongated, slightly dorsally orientated nasal capsules with three dorsolateral foramina, which might be ...
Luca Leicht +2 more
wiley +1 more source
Production and Efficiency of Pond Fish Farming Business Milkfish
Habitat, 2017 Various different factors, either direct or indirect one, contribute to decreasing production of milkfish in milkfish farms located in North Konawe. Production of milkfish in the area is relatively low and it is predicted that the milkfarmers’ inability ...
Hadi Sudarmo, Samsul Alam Fyka
doaj +1 more source
A diffusive logistic problem with a free boundary in time-periodic environment: favorable habitat or unfavorable habitat [PDF]
arXiv, 2014 We study the diffusive logistic equation with a free boundary in timeperiodic environment. To understand the effect of the dispersal rate $d$, the original habitat radius $h_0$, the spreading capability $\mu$, and the initial density $u_0$ on the dynamics of the problem, we divide the time-periodic habitat into two cases: favorable habitat and ...
arxiv
The Anatomical Record, EarlyView., 2023 Abstract The Hyaenodonta were the most diverse carnivorous mammals in the European Eocene and were classically divided into three subfamilies: Sinopaninae, Arfianinae, and Proviverrinae, with this latter being the most successful of the three, as it exhibited a much larger geographic and temporal range.
Manuel J. Salesa +4 more
wiley +1 more source
Unsupervised learning for vascular heterogeneity assessment of glioblastoma based on magnetic resonance imaging: The Hemodynamic Tissue Signature [PDF]
arXiv, 2020 This thesis focuses on the research and development of the Hemodynamic Tissue Signature (HTS) method: an unsupervised machine learning approach to describe the vascular heterogeneity of glioblastomas by means of perfusion MRI analysis. The HTS builds on the concept of habitats.
arxiv