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Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source

, 2018
Non-communicable diseases, also known as modern-life diseases, are the leading cause of morbidity and mortality in the world and in the Republic of Macedonia. The complexity of their occurrence, often associated with multifactorial etiology and lifestyle
Ð¡Ð¿Ð°ÑÐ¾Ð²ÑÐºÐ¸ (Spasovski), ÐœÐ¾Ð¼Ðµ (Mome) +3 more
core +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source

Degree sequence for k-arc strongly connected multiple digraphs

Journal of Inequalities and Applications, 2017
Let D be a digraph on { v 1 , … , v n } $\{v_{1},\ldots, v_{n}\}$ . Then the sequence { ( d + ( v 1 ) , d − ( v 1 ) ) , … , ( d + ( v n ) , d − ( v n ) ) } $\{ (d^{+}(v_{1}), d^{-}(v_{1})), \ldots, (d^{+}(v_{n}), d^{-}(v_{n}))\}$ is called the degree ...
Yanmei Hong, Qinghai Liu
doaj +1 more source

Improving the Gilbert-Varshamov bound for $q$-ary codes [PDF]

Discrete Mathematics & Theoretical Computer Science, 2005
Given positive integers $q$, $n$ and $d$, denote by $A_q(n,d)$ the maximum size of a $q$-ary code of length $n$ and minimum distance $d$. The famous Gilbert-Varshamov bound asserts that $A_q(n,d+1) \geq q^n / V_q(n,d)$, where $V_q(n,d)=\sum_{i=0}^d ...
Van H. Vu, Lei Wu
doaj +1 more source

Ð•Ð’ÐÐ›Ð£ÐÐ¦Ð˜ÐˆÐ ÐÐ ÐŸÐ ÐžÐ“Ð ÐÐœÐ˜Ð¢Ð• Ð—Ð ÐŸÐ Ð•Ð’Ð•ÐÐ¦Ð˜ÐˆÐ ÐÐ ÐœÐÐ›Ð˜Ð“ÐÐ˜ ÐÐ•ÐžÐŸÐ›ÐÐ—ÐœÐ˜ Ð’Ðž Ð Ð•ÐŸÐ£Ð‘Ð›Ð˜ÐšÐ ÐœÐÐšÐ•Ð”ÐžÐÐ˜ÐˆÐ (2005-2015) [PDF]

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva +6 more
wiley +1 more source

On (n,D)- quasi Operators

Iraqi Journal for Computer Science and Mathematics
T Through the article, we will provide an entirely novel type of quasi operators base on the concept of D razin inverse in Operator theory which is named (n,D) -quasi operators on the Hilbert spaces, also we explain the sum, product, and other features ...
salim dawood mohsen
doaj +1 more source

ÐÐÐ¢Ð˜ÐœÐ˜ÐšÐ ÐžÐ‘ÐÐ Ð Ð•Ð—Ð˜Ð¡Ð¢Ð•ÐÐ¦Ð˜ÐˆÐ (ÐÐœÐ ) Ð’Ðž Ð•Ð’Ð ÐžÐŸÐ Ð˜ Ð‘ÐÐ›ÐšÐÐÐ¡ÐšÐ˜ÐžÐ¢ Ð Ð•Ð“Ð˜ÐžÐ – ÐŸÐ Ð•Ð“Ð›Ð•Ð” ÐÐ Ð¡Ð•Ð“ÐÐ¨ÐÐÐ¢Ð Ð¡ÐžÐ¡Ð¢ÐžÐˆÐ‘Ð [PDF]

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source

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