A meta-analysis on the impact of different matrix structures on species movement rates

Eycott, Amy E.; Stewart, Gavin; Buyung-Ali, Lisette M; Bowler, Diana E.; Watts, Kevin; Pullin, Andrew S.

doi:10.1007/s10980-012-9781-9

Cited by 130 publications

(104 citation statements)

References 69 publications

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“…In addition, E. edulis' pollinators may be strongly affected by fragmentation and habitat isolation, which here are partially represented by matrix resistance. Matrix resistance has been pinpointed as an important factor affecting the mobility of individuals and also abundance, occurrence and genetic variability (Eycott et al, 2012;Lange et al, 2012). The change in forest cover may also change the abundance and richness of seed dispersers and pollinators (e.g., González-Varo et al, 2009;Martensen et al, 2012).…”

Section: Genetic Differentiationmentioning

confidence: 99%

Contemporary and historic factors influence differently genetic differentiation and diversity in a tropical palm

et al. 2015

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Population genetics theory predicts loss in genetic variability because of drift and inbreeding in isolated plant populations; however, it has been argued that long-distance pollination and seed dispersal may be able to maintain gene flow, even in highly fragmented landscapes. We tested how historical effective population size, historical migration and contemporary landscape structure, such as forest cover, patch isolation and matrix resistance, affect genetic variability and differentiation of seedlings in a tropical palm (Euterpe edulis) in a human-modified rainforest. We sampled 16 sites within five landscapes in the Brazilian Atlantic forest and assessed genetic variability and differentiation using eight microsatellite loci. Using a model selection approach, none of the covariates explained the variation observed in inbreeding coefficients among populations. The variation in genetic diversity among sites was best explained by historical effective population size. Allelic richness was best explained by historical effective population size and matrix resistance, whereas genetic differentiation was explained by matrix resistance. Coalescence analysis revealed high historical migration between sites within landscapes and constant historical population sizes, showing that the genetic differentiation is most likely due to recent changes caused by habitat loss and fragmentation. Overall, recent landscape changes have a greater influence on among-population genetic variation than historical gene flow process. As immediate restoration actions in landscapes with low forest amount, the development of more permeable matrices to allow the movement of pollinators and seed dispersers may be an effective strategy to maintain microevolutionary processes.

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Section: Genetic Differentiationmentioning

confidence: 99%

Contemporary and historic factors influence differently genetic differentiation and diversity in a tropical palm

et al. 2015

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“…between two open habitats) and animals are less likely to move through sharp borders (e.g. between meadow and forest), which could direct the movement along the boundary (Ries and Debinski 2001;Kuefler et al 2010;Eycott et al 2012;Bertoncelj and Dolman 2012). Therefore, it may be expected that corridors are more important for organisms living in landscapes composed of contrasting types of environments, which is the case in the studied system, where tree habitats are embedded in the inhospitable matrix and the beetle is strictly associated with a narrow ecological niche.…”

Section: Discussionmentioning

confidence: 96%

Rural avenues as dispersal corridors for the vulnerable saproxylic beetle Elater ferrugineus in a fragmented agricultural landscape

et al. 2015

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Understanding factors that limit gene flow through the landscape is crucial for conservation of organisms living in fragmented habitats. We analysed patterns of gene flow in Elater ferrugineus, an endangered click beetle living in old-growth, hollow trees in a network of rural avenues surrounded by inhospitable arable land. Using amplified fragment length polymorphism (AFLP) data, we aimed to evaluate if the landscape features important for the beetle's development are also important for its dispersal. By dividing the sampling area into 30 9 30 m cells, with each cell categorised into one of four classes according to its putative permeability for dispersing beetles, and by correlating matrices of genetic and landscape resistance distances, we evaluated which of the landscape models had the best fit with the observed kinship structure. Significant correlations between genetic and Euclidean distances were detected, which indicated that restricted dispersal is the main constraint driving differentiation between populations of E. ferrugineus. Out of 81 landscape models in total, 54 models yielded significantly weaker correlation between matrices of pairwise kinship and effective distances than the null model. Regression analysis pointed to avenues as having the highest and positive impact on the concordance between matrices of kinship and landscape distances, while open arable land had the opposite effect. Our study thus shows that tree avenues can function as efficient dispersal corridors for E. ferrugineus, highlighting the importance of saving such avenues to increase the connectivity among suitable habitat patches, thereby reducing the risk of local extinctions of E. ferrugineus as well as other saproxylic organisms.

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“…Animals may be hesitant to move through corridors if they perceive that predation risk is too high. Internal state approaches to reduce actual or perceived predation risk and hence facilitate animal movements include providing supplementary refuges [71] or non-hostile matrices similar in structure to habitat patches [26,72], and reducing introduced predator numbers [73]. Doing so during dispersal windows may be critical for promoting population connectivity.…”

Section: (A) Internal Statementioning

confidence: 99%

“…Overall, though, landscape managers have limited ability to directly influence animal motion capacities. This means that it is important that internal factors and navigation capacities are catered for when establishing habitat corridors or non-hostile matrices for less mobile species, such as flightless beetles and small reptiles [26,72]. Similarly, crossing structures can improve connectivity for animals whose motion capacity is inadequate for traversing physical barriers created by infrastructure [8,19].…”

Section: (C) Motion Capacitymentioning

confidence: 99%

“…Second, new knowledge is accumulating rapidly with new technologies enabling collection of very high-resolution movement data [23], consequent analytical advances being developed [24], the advent of the movement ecology framework [7], and an increasing number of meta-analyses and quantitative reviews becoming available [e.g. 25,26]. Finally, although aspects of animal movement have long featured in landscape ecology through metapopulation theory [27], the landscape of fear [28], perceptual range [29] and matrix effects [30], these concepts are mostly considered in isolation.…”

Section: Introductionmentioning

confidence: 99%

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Coupling movement and landscape ecology for animal conservation in production landscapes

Doherty¹,

Driscoll²

2018

Proc. R. Soc. B.

100

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Habitat conversion in production landscapes is among the greatest threats to biodiversity, not least because it can disrupt animal movement. Using the movement ecology framework, we review animal movement in production landscapes, including areas managed for agriculture and forestry. We consider internal and external drivers of altered animal movement and how this affects navigation and motion capacities and population dynamics. Conventional management approaches in fragmented landscapes focus on promoting connectivity using structural changes in the landscape. However, a movement ecology perspective emphasizes that manipulating the internal motivations or navigation capacity of animals represents untapped opportunities to improve movement and the effectiveness of structural connectivity investments. Integrating movement and landscape ecology opens new opportunities for conservation management in production landscapes.

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A meta-analysis on the impact of different matrix structures on species movement rates

Cited by 130 publications

References 69 publications

Contemporary and historic factors influence differently genetic differentiation and diversity in a tropical palm

Contemporary and historic factors influence differently genetic differentiation and diversity in a tropical palm

Rural avenues as dispersal corridors for the vulnerable saproxylic beetle Elater ferrugineus in a fragmented agricultural landscape

Coupling movement and landscape ecology for animal conservation in production landscapes

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