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1. Simple discrete‐time metapopulation models of patch occupancy

Author:
Marculis, Nathan G.; Hastings, Alan
Source:
Oikos 2021 v.130 no.2 pp. 310-320
ISSN:
0030-1299
Subject:
population dynamics,   etc   ; extinction; models;     Show all 3 Subjects
Abstract:
... Simple models in theoretical ecology have a long‐standing history of being used to understand how specific processes influence population dynamics as well as providing a foundation for future endeavors. The Levins model is the seminal example of this for continuous‐time metapopulation dynamics. However, many natural populations have a distinct separation between processes and data is not collected ...
DOI:
10.1111/oik.07716

2. Linking range wide energetic tradeoffs to breeding performance in a long‐distance migrant

Author:
Carneiro, Camilo; Gunnarsson, Tómas G.; Méndez, Verónica; Soares, Amadeu M. V. M.; Alves, José A.
Source:
Ecography 2021 v.44 no.4 pp. 512-524
ISSN:
0906-7590
Subject:
population dynamics,   etc   ; Numenius; eggs; winter;     Show all 4 Subjects
Abstract:
... Understanding how individual tradeoffs and carry‐over effects along the annual cycle influence fitness is fundamental to unravel population dynamics, but such data is particularly challenging to collect in long‐distance migrants. Here, with a full annual cycle perspective of Icelandic whimbrels Numenius phaeopus islandicus, we investigate tradeoffs across the entire distribution, assessing migrati ...
DOI:
10.1111/ecog.05152

3. Asymmetric competition and floater dynamics

Author:
Noonburg, Erik G.; Anderson, Rindy C.
Source:
Ecology 2021 v.102 no.2 pp. e03238
ISSN:
0012-9658
Subject:
population dynamics,   etc   ; models; reproductive success;     Show all 3 Subjects
Abstract:
... In territorial species, nonterritorial floaters may be critical to population dynamics. One theoretical framework, based on the assumption that floating is a strategic decision to forego reproduction, predicts that selection maintains an abundant floater population even if low‐quality territories are available. However, existing models make two critical assumptions: all individuals have equal comp ...
DOI:
10.1002/ecy.3238

4. Sustainable strategies for harvesting predators and prey in a fluctuating environment

Author:
Bellier, Edwige; Sæther, Bernt-Erik; Engen, Steinar
Source:
Ecological modelling 2021 v.440 pp. 109350
ISSN:
0304-3800
Subject:
population dynamics,   etc   ; models; stochastic processes;     Show all 3 Subjects
Abstract:
... The effects of harvest and fluctuating environment on inter-dependent predators and prey are complex and not well-known. We define a stochastic model where the predators and prey dynamically interact. The novelty of the model holds on the fact that predators and prey dynamics are simultaneously affected by correlated environmental noises. Interacting predators and prey are harvested using a propor ...
DOI:
10.1016/j.ecolmodel.2020.109350

5. Mathematical Modeling of Population Dynamics Based on Recurrent Equations: Results and Prospects. Part I

Author:
Frisman, E. Ya.; Zhdanova, O. L.; Kulakov, M. P.; Neverova, G. P.; Revutskaya, O. L.
Source:
Biology bulletin of the Russian Academy of Sciences 2021 v.48 no.1 pp. 1-15
ISSN:
1062-3590
Subject:
population dynamics,   etc   ; Biological Sciences; equations;     Show all 3 Subjects
Abstract:
... Approaches to modeling population dynamics using discrete-time models are described in this two-part review. The development of the scientific ideas of discrete time models, from the Malthus model to modern population models that take into account many factors affecting the structure and dynamics, is presented. The most important and interesting results of recurrent equation application to biologi ...
DOI:
10.1134/S1062359021010064

6. Impacts of artificial lighting at night on insect conservation

Author:
Stewart, Alan J. A.
Source:
Insect conservation and diversity 2021 v.14 no.2 pp. 163-166
ISSN:
1752-458X
Subject:
population dynamics,   etc   ; biodiversity; ecosystems; insects; lighting;     Show all 5 Subjects
Abstract:
... The widespread adoption of artificial lighting at night (ALAN) presents a growing threat to biodiversity in general and nocturnally active insects in particular. ALAN may be contributing to widely reported declines in insect populations but supporting evidence is sparse. Recent advances in external lighting technology, particularly the increasing adoption of broad spectrum ‘white’ LEDs, suggest th ...
DOI:
10.1111/icad.12490

7. Improving inference for nonlinear state‐space models of animal population dynamics given biased sequential life stage data

Author:
Polansky, Leo; Newman, Ken B.; Mitchell, Lara
Source:
Biometrics 2021 v.77 no.1 pp. 352-361
ISSN:
0006-341X
Subject:
population dynamics,   etc   ; animals; case studies; variance;     Show all 4 Subjects
Abstract:
... State‐space models (SSMs) are a popular tool for modeling animal abundances. Inference difficulties for simple linear SSMs are well known, particularly in relation to simultaneous estimation of process and observation variances. Several remedies to overcome estimation problems have been studied for relatively simple SSMs, but whether these challenges and proposed remedies apply for nonlinear stage ...
DOI:
10.1111/biom.13267

8. Dilution effects enhance variation in parasitism risk among hosts and stabilize host–parasitoid population dynamics

Author:
Okuyama, Toshinori
Source:
Ecological modelling 2021 v.441 pp. 109425
ISSN:
0304-3800
Subject:
population dynamics,   etc   ; parasitism; parasitoids; risk; simulation models;     Show all 5 Subjects
Abstract:
... In host–parasitoid interactions, parasitism risk experienced by each host may decrease as the host density increases (referred to as the dilution effect) when parasitoids can parasitize a limited number of hosts at a given time no matter how abundant hosts are. In the relationship between parasitism risk and host–parasitoid dynamics, the dilution effect is generally considered as a destabilizing f ...
DOI:
10.1016/j.ecolmodel.2020.109425

9. Breakdown of the ideal free distribution under conditions of severe and low competition

Author:
Sirovnik, Janja; Voelkl, Bernhard; Keeling, Linda Jane; Würbel, Hanno; Toscano, Michael Jeffrey
Source:
Behavioral ecology and sociobiology 2021 v.75 no.2 pp. 31
ISSN:
0340-5443
Subject:
population dynamics,   etc   ; aggression; chickens; habitats; sociobiology;     Show all 5 Subjects
Abstract:
... Under the ideal free distribution (IFD), the number of organisms competing for a resource at different sites is proportional to the resource distribution among sites. The ideal free distribution of competitors in a heterogeneous environment often predicts habitat matching, where the relative number of individuals using any two patches matches the relative availability of resources in those same tw ...
DOI:
10.1007/s00265-020-02949-3

10. Dynamics of a stochastic predator-prey model with habitat complexity and prey aggregation

Author:
Zhang, Shengqiang; Zhang, Tonghua; Yuan, Sanling
Source:
Ecological complexity 2021 v.45 pp. 100889
ISSN:
1476-945X
Subject:
population dynamics,   etc   ; habitats; models; prey species;     Show all 4 Subjects
Abstract:
... Interplay between predator and prey is a complex process in ecosystems due to its nature. The population dynamics can be affected by many extrinsic and intrinsic factors. In this paper, we make an attempt to uncover the effects from environmental disturbances when populations are subject to habitat complexity and aggregation effect. We firstly propose a stochastic predator-prey model with habitat ...
DOI:
10.1016/j.ecocom.2020.100889

11. Weak chaos, Allee points, and intermittency emerging from niche construction in population models

Author:
Vandermeer, John
Source:
Theoretical ecology 2020 v.13 no.2 pp. 177-182
ISSN:
1874-1738
Subject:
population dynamics,   etc   ; hysteresis; models;     Show all 3 Subjects
Abstract:
... The idea of niche construction is regarded as an interesting, if not essential, element of population dynamics. Classical results from population biology emerge from such a formulation, such as chaotic behavior, the self-organized emergence of Allee points, critical transitions, and hysteresis. Relaxing the assumption of a descending limb in classic 1-D map representations of chaos, the applicatio ...
DOI:
10.1007/s12080-019-00438-6

12. Spatial covariation of competing species in a fluctuating environment

Author:
Lee, Aline Magdalena; Sæther, Bernt‐Erik; Engen, Steinar
Source:
Ecology 2020 v.101 no.1 pp. e02901
ISSN:
0012-9658
Subject:
population dynamics,   etc   ; biodiversity; models;     Show all 3 Subjects
Abstract:
... Understanding how stochastic fluctuations in the environment influence population dynamics is crucial for sustainable management of biological diversity. However, because species do not live in isolation, this requires knowledge of how species interactions influence population dynamics. In addition, spatial processes play an important role in shaping population dynamics. It is therefore important ...
DOI:
10.1002/ecy.2901

13. Drone and sensor technology for sustainable weed management: a review

Author:
Esposito, Marco; Crimaldi, Mariano; Cirillo, Valerio; Sarghini, Fabrizio; Maggio, Albino
Source:
Chemical and biological technologies in agriculture 2021 v.8 no.1 pp. 18
ISSN:
2196-5641
Subject:
population dynamics,   etc   ; agriculture; fields; herbicides; integrated weed management; markets; weeds;     Show all 7 Subjects
Abstract:
... Weeds are amongst the most impacting abiotic factors in agriculture, causing important yield loss worldwide. Integrated Weed Management coupled with the use of Unmanned Aerial Vehicles (drones), allows for Site-Specific Weed Management, which is a highly efficient methodology as well as beneficial to the environment. The identification of weed patches in a cultivated field can be achieved by combi ...
DOI:
10.1186/s40538-021-00217-8

14. Pesticide risk assessment in honeybees: Toward the use of behavioral and reproductive performances as assessment endpoints

Author:
Barascou, Lena; Brunet, Jean-Luc; Belzunces, Luc; Decourtye, Axel; Henry, Mickael; Fourrier, Julie; Le Conte, Yves; Alaux, Cedric
Source:
Chemosphere 2021 v.276 pp. 130134
ISSN:
0045-6535
Subject:
population dynamics,   etc   ; ecotoxicology; pesticides; reproduction; risk assessment; toxicity;     Show all 6 Subjects
Abstract:
... The growing gap between new evidence of pesticide toxicity in honeybees and conventional toxicological assays recommended by regulatory test guidelines emphasizes the need to complement current lethal endpoints with sublethal endpoints. In this context, behavioral and reproductive performances have received growing interest since the 2000s, likely due to their ecological relevance and/or the emerg ...
DOI:
10.1016/j.chemosphere.2021.130134

15. Long-term data shows increasing dominance of Bombus terrestris with climate warming

Author:
Herbertsson, Lina; Khalaf, Reem; Johnson, Karin; Bygebjerg, Rune; Blomqvist, Sofia; Persson, Anna S.
Source:
Basic and applied ecology 2021 v.53 pp. 116-123
ISSN:
1439-1791
Subject:
population dynamics,   etc   ; Bombus terrestris; applied ecology; climate; males; temperature; Sweden;     Show all 7 Subjects
Abstract:
... While many bumblebee species decline due to climate and land-use changes, others cope well with contemporary conditions. One example is Bombus terrestris, which is common in intensively managed agricultural landscapes. During the 20th century its subgenus, which includes the B. lucorum complex (B. lucorum, B. cryptarum and B. magnus) came to dominate Scandinavian bumblebee communities, but the spe ...
DOI:
10.1016/j.baae.2021.03.008

16. Incorporating Animal Movement Into Distance Sampling

Author:
Glennie, R.; Buckland, S. T.; Langrock, R.; Gerrodette, T.; Ballance, L. T.; Chivers, S. J.; Scott, M. D.
Source:
Journal of the American Statistical Association 2021 v.116 no.533 pp. 107-115
ISSN:
1537-274X
Subject:
population dynamics,   etc   ; Markov chain; models; surveys; telemetry; wild animals;     Show all 6 Subjects
Abstract:
... Distance sampling is a popular statistical method to estimate the density of wild animal populations. Conventional distance sampling represents animals as fixed points in space that are detected with an unknown probability that depends on the distance between the observer and the animal. Animal movement can cause substantial bias in density estimation. Methods to correct for responsive animal move ...
DOI:
10.1080/01621459.2020.1764362

17. Long-term projections of economic growth in the 47 prefectures of Japan: An application of Japan shared socioeconomic pathways

Author:
Honjo, Keita; Gomi, Kei; Kanamori, Yuko; Takahashi, Kiyoshi; Matsuhashi, Keisuke
Source:
Heliyon 2021 v.7 no.3 pp. e06412
ISSN:
2405-8440
Subject:
population dynamics,   etc   ; Japan; capital; climate change; decline; economic development; labor;     Show all 7 Subjects
Abstract:
... Assessing climate change impacts on local communities is an urgent task for national and subnational governments. The impact assessment requires socioeconomic scenarios, including a long-term outlook for demographic and economic indices. In Japan, the National Institute for Environmental Studies developed the Japan Shared Socioeconomic Pathways (JPNSSPs) and presented regional population scenarios ...
DOI:
10.1016/j.heliyon.2021.e06412

18. The role of host phenology for parasite transmission

Author:
MacDonald, Hannelore; Akçay, Erol; Brisson, Dustin
Source:
Theoretical ecology 2021 v.14 no.1 pp. 123-143
ISSN:
1874-1738
Subject:
population dynamics,   etc   ; Lyme disease; larvae; mathematical models; mice; phenology; ticks;     Show all 7 Subjects
Abstract:
... Phenology is a fundamental determinant of species distributions, abundances, and interactions. In host–parasite interactions, host phenology can affect parasite fitness due to the temporal constraints it imposes on host contact rates. However, it remains unclear how parasite transmission is shaped by the wide range of phenological patterns observed in nature. We develop a mathematical model of the ...
DOI:
10.1007/s12080-020-00484-5

19. Use of colored pan traps method for monitoring insect (Diptera and Hymenoptera) diversity in the Southern Tropical Andes of Ecuador

Author:
Padrón, Pablo S.; Vásquez, C. B.; Durán, S. C.; Pezo, K. V.; Loyola, N. A.; Junghanns, A.
Source:
International journal of tropical insect science 2021 v.41 no.1 pp. 643-652
ISSN:
1742-7592
Subject:
population dynamics,   etc   ; Diptera; Hymenoptera; color; fauna; insects; Andes region; Ecuador;     Show all 8 Subjects
Abstract:
... Insects are a dominant part of the megadiversity of the Tropical Andes but monitoring and studying them has been challenging. Here we employ colored pan trap method for collecting insects (Diptera and Hymenoptera) in the Andes of Ecuador in order to explore the use of the colored pan traps method. Sixty white, yellow, and blue colored pan traps were used twice every month for 24 months. A total of ...
DOI:
10.1007/s42690-020-00252-2

20. Lotka–Volterra model applied to two sympatric species of Liolaemus in competition

Author:
Novoa-Muñoz, Francisco; Gómez-Fuentealba, Nelly; Osorio-Baeza, Florencia
Source:
Ecological modelling 2021 v.439 pp. 109347
ISSN:
0304-3800
Subject:
population dynamics,   etc   ; Liolaemus; autumn; body temperature; models; spring; sympatry; thermoregulation;     Show all 8 Subjects
Abstract:
... This paper models the population dynamics and competition of two sympatric species of lizards Liolaemus cyanogaster and Liolaemus tenuis under the following scenarios: (a) population dynamics of each species, (b) competition to thermoregulate, and (c) competition for the substrate. The hypothesis was that a variant of the Lotka–Volterra model is able to explain patterns related to population dynam ...
DOI:
10.1016/j.ecolmodel.2020.109347