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Naaf Tobias Feigs Jannis Till Huang Siyu Brunet Jörg Cousins Sara A. O. Decocq Guillaume De Frenne Pieter Diekmann Martin Govaert Sanne Hedwall Per-Ola Lenoir Jonathan Liira Jaan Meeussen Camille Plue Jan Vangansbeke Pieter Vanneste Thomas Verheyen Kris Holzhauer Stephanie I. J. Kramp Katja 《Landscape Ecology》2022,37(5):1365-1384
Landscape Ecology - Plant populations in agricultural landscapes are mostly fragmented and their functional connectivity often depends on seed and pollen dispersal by animals. However, little is... 相似文献
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Naaf Tobias Feigs Jannis Till Huang Siyu Brunet Jörg Cousins Sara A. O. Decocq Guillaume De Frenne Pieter Diekmann Martin Govaert Sanne Hedwall Per-Ola Helsen Kenny Lenoir Jonathan Liira Jaan Meeussen Camille Plue Jan Poli Pedro Spicher Fabien Vangansbeke Pieter Vanneste Thomas Verheyen Kris Holzhauer Stephanie I. J. Kramp Katja 《Landscape Ecology》2021,36(10):2831-2848
Landscape Ecology - Evidence for effects of habitat loss and fragmentation on the viability of temperate forest herb populations in agricultural landscapes is so far based on population genetic... 相似文献
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Forest biodiversity conservation in intensively managed agricultural landscapes is a constant concern. The dispersal ability of forest plants is, hypothetically, the major limiting factor in fragmented forest landscapes and, therefore, we tested the validity of the theoretical dispersal scheme for plants in fragmented landscapes: ancient forest > woody corridor > emerging forest patch. To this end, we examined the distribution pattern of forest-dwelling plant species in rural landscapes, specifically the occurrence of common forest plant species in old historical forests and in closed-canopy stands of rural ornamental parks, planted on an agricultural land one–two centuries ago.We found that (i) the shade tolerant plant flora in parks’ stands more resemble forests than woody linear habitats (corridors), (ii) nearly 50% of the local forest species pool was present in parks, (iii) the abundance of seed source habitats and the ecological quality of the target habitat determine success rate of colonization. Models predicted that optimal stand characteristics for forest herbs are a minimum area 2.5 ha, canopy closure 0.7–0.8, basal area of trees 10–20 m2 ha?1 and the presence of moderate understory management.We conclude that only patch-type habitats provide suitable environmental conditions for forest-specific plant species. Many common forest plant species are capable of long-distance dispersal between habitat patches across hostile agricultural land, and accordingly, their dispersal follows a modified scheme of the island biogeography, without intermediary role of corridor habitats. Old rural manor parks provide an ecosystem service for nature conservation by harbouring forest biodiversity, and should be considered as potential refugium habitats. 相似文献
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Pallieter De Smedt Lander Baeten Willem Proesmans Matty P. Berg Jörg Brunet Sara A. O. Cousins Guillaume Decocq Marc Deconchat Martin Diekmann Emilie Gallet-Moron Brice Giffard Jaan Liira Ludmilla Martin Astra Ooms Alicia Valdés Monika Wulf Martin Hermy Dries Bonte Kris Verheyen 《Landscape Ecology》2018,33(3):407-421
Purpose
Most of the agricultural landscape in Europe, and elsewhere, consists of mosaics with scattered fragments of semi-natural habitat like small forest fragments. Mutual interactions between forest fragments and agricultural areas influence ecosystem processes such as nutrient cycling, a process strongly mediated by the macrodetritivore community, which is however, poorly studied. We investigated macrodetritivore distribution patterns at local and landscape-level and used a key functional trait (desiccation resistance) to gain mechanistic insights of the putative drivers.Methods
Macrodetritivores were sampled in forest edges-centres of 224 European forest fragments across 14 landscapes opposing in land use intensity. We used a multilevel analysis of variance to assess the relative contribution of different spatial scales in explaining activity-density and Shannon-diversity of woodlice and millipedes, together with a model-based analysis of the multivariate activity-density data testing the effect on species composition. Secondly, we tested if desiccation resistance of macrodetritivores varied across communities at different spatial scales using linear mixed effect models.Results
Forest edge-centre and landscape use intensity determined activity-density and community composition of macrodetritivores in forest fragments, while fragment characteristics like size and continuity were relatively unimportant. Forest edges and higher intensity landscapes supported higher activity-density of macrodetritivores and determined species composition. Forest edges sustained woodlouse communities dominated by more drought tolerant species.Conclusions
Landscape use intensity and forest edges are main drivers in macrodetritivore distribution in forest fragments with desiccation resistance a good predictor of macrodetritivore distribution. Key functional traits can help us to predict changes in community structure in changing landscapes.5.
Jaanus Paal Margit Turb Tiina Köster Elle Rajandu Jaan Liira 《Journal of Forest Research》2011,16(3):244-252
Decisions regarding forest typology, management and protection are often based on the structures of present-day forests, ignoring
their successional history. Forests growing on kames, eskers and various moraine hillocks common in regions with Holocene
glaciation are good examples of this approach. In Estonia, these forests locally persist as fragments of continuous primary
forest, but usually they are situated on former slash-and-burn areas (bushlands) or reforested agricultural land. Our aim
was to elucidate the strength of the effect of long-term land-use history on the present-day vegetation compositions of mature
hillock forests and their soil chemistry. It appeared that even the mature secondary hillock forests are still distinct from
historically continuous stands in terms of species composition. We discovered connections between stand history and species
content in hillock forests as well as transformed soil properties. The carbon and nitrogen contents in the humus horizons
of secondary forests are lower while their carbon–nitrogen ratios are higher than in continuous forests. The relationship
between vegetation and stand history is demonstrated by the higher proportions of anthropophytic and apophytic species in
the herb layer of the secondary forests. The presence of species that are tolerant of anthropogenic impact on the secondary
hillock forests floor can also be partly explained by the effect of different species in the tree and shrub layers, gaps in
the tree canopy, and the boundary effect caused by the small areas of forest patches, neighboring grasslands or fields. The
extinction debt in secondary communities should also be considered. 相似文献
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We focused our attention on quantifying the factor complex of forest regeneration in 423 mature and old stands with contrasting
environmental conditions. We recorded the microhabitat selection of tree recruits, the frequency of tree seedlings, and evaluated
the drivers of sapling abundance and diversity. The majority of forest regeneration was established on undisturbed forest
floor. Dead wood was a frequent substrate in spruce-(co)dominated forests. Seedling frequency within a stand was related to
the site-type specific productivity gradient of stands—pine seedlings were common in low-productivity and spruce in high-productivity
boreal forests. Seedlings of temperate broad-leaved trees dominated in productive boreonemoral forests, except for oak, which
showed a uniform distribution of abundance in all forest site-types. Sapling abundance was dictated by forest site-type, and
facilitated by stand diversity, variability in stand closure, lying dead wood, abundant moss, and a thick organic layer. Only
in boreal forests was sapling abundance suppressed by the abundant spruce and younger trees. Upon considering the relationship
between sapling abundance and species richness, sapling diversity was dependent on forest site-type, suppressed by stand density
and dead wood (old gap) abundance, and facilitated by stand diversity. In addition, boreonemoral stands, competition from
herbs, and facilitation by mosses occurred. The observed pattern of tree recruitment points to the importance of top-down
effects of the overstory, competing or facilitating interactions with forest floor vegetation, and availability of regeneration
microhabitats, which in complex make their ecology comparable with forest herbs. Natural forest regeneration can be enhanced
if silvicultural methods support mixed stands and enhance field layer diversity. Oak can provide the universal tree species
to improve stand structure over a wide range of habitats. 相似文献
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