Direct and indirect effects of forest management on tree-hole inhabiting aquatic organisms and their functional traits

Petermann, Jana S.; Roberts, A.; Hemmerling, Christin; Bajerski, Felizitas; Pascual, Javier; Overmann, Jörg; Weisser, Wolfgang W.; Rueß, Liliane; Goßner, Martin M.

doi:10.1016/j.scitotenv.2019.135418

Cited by 9 publications

(23 citation statements)

References 65 publications

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“…This study is based on a compiled dataset from two projects, one focusing on ALB (29 plots) and HAI (24) in 2009 and 2011, respectively (Gossner et al, 2016), and one conducted in ALB (25), HAI (25) and SCH (25) in 2014 (Petermann et al, 2020). The experimental plots were 100 m × 100 m (1 ha) in size and covered the specific range of forest management intensities found in the region, from unmanaged beech forests to managed beech and conifer forests [spruce (Picea abies) in ALB und HAI; pine (Pinus sylvestris) in SCH].…”

Section: Study Plotsmentioning

confidence: 99%

“…Tree holes at ≥2 m height were defined as "canopy holes" and those at <2 m height as "ground holes", following the classification of Kitching R. L. (1971) and Yanoviak and Fincke (2005). On each plot, either all available pan tree holes with a volume ≥50 ml plus all available rot holes were sampled (Gossner et al, 2016), or two canopy and two ground holes with a volume of 200-1000 ml were sampled, including both pan and rot holes (Petermann et al, 2020). Canopy tree holes were reached by using the single-rope climbing technique (Perry, 1978).…”

Section: Study Plotsmentioning

confidence: 99%

“…Tree-hole properties such as size, amount of detritus (the basic resource in these microhabitats), and water chemistry are likely additionally important niche parameters (Gossner et al, 2016). Independent of the vertical position, stand-scale variables, such as the density of suitable microhabitats, might also affect the communities in water-filled tree holes (Gossner et al, 2016;Petermann et al, 2020). A likely reason for this is that communities in these microhabitats are organized as metacommunities, with local communities forming as a result of limited dispersal (Leibold et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we used data from two large-scale projects on the insect communities of natural tree holes occurring across vertical strata in differently managed forests. Previous publications based on these data focused on the consequences of forest management for communities in water-filled tree holes (Gossner et al, 2016;Petermann et al, 2020). Here, we address the importance of the vertical position of tree holes, as a proxy for microclimatic conditions, relative to other environmental drivers at the tree-hole scale (e.g., tree-hole size and chemistry, which likely also change with height) and stand scale (tree-hole density) in structuring insect communities developing in tree holes.…”

Section: Introductionmentioning

confidence: 99%

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Vertical Stratification of Insect Species Developing in Water-Filled Tree Holes

Goßner¹,

Petermann²

2022

Front. For. Glob. Change

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Forest ecosystems have a distinct vertical dimension, but the structuring of communities in this three-dimensional space is not well understood. Water-filled tree holes are natural microcosms structured in metacommunities. Here, we used these microcosms as model systems to analyze how insect communities and the occurrence and abundance of individual species are influenced by biotic and abiotic microhabitat characteristics, the vertical position of the tree hole, and stand-scale habitat availability. We found that both the characteristics of water-filled tree holes and their insect communities differ significantly between canopy and ground level. Individual insect species showed contrasting responses to the vertical position of the tree holes when important environmental factors at the stand and the tree-hole scale were considered. While some species, such as the mosquito Aedes geniculatus and the beetle Prionocyphon serricornis, decreased in abundance with increasing tree-hole height, the biting midge Dasyhelea sp., the non-biting midge Metriocnemus cavicola and the hoverfly Myiatropa florea increased in abundance. Our results suggest that vertical stratification in forests is most likely driven not only by variation in tree-hole microhabitat properties, i.e., niche separation, but also by individual species traits, such as adult dispersal propensity, food preferences and mating behavior of adult stages, and interspecific competition of larval stages. Therefore, communities of insect species developing in tree holes are likely structured by competition–colonization trade-offs predicted by metacommunity theory.

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Section: Study Plotsmentioning

confidence: 99%

Section: Study Plotsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vertical Stratification of Insect Species Developing in Water-Filled Tree Holes

Goßner¹,

Petermann²

2022

Front. For. Glob. Change

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“…Despite high contribution to aquatic biodiversity and functions, SWB are largely underrepresented in the scientific literature as well as in water protection and legislation directives [3]. Moreover, research on context-dependencies of the effects of various HI stressors across different consumer communities is scarce for freshwater ecosystems [39]. However, evidence is emerging that impact of anthropogenic pressure and associated environmental changes on diversity and functioning of fauna communities may strongly depend on the trophic group (e.g.…”

Section: Introductionmentioning

confidence: 99%

Human Impact Induces Shifts in Trophic Composition and Diversity of Consumer Communities in Small Freshwater Ecosystems

Buzhdygan

Piperac

Stamenković

et al. 2021

Small Water Bodies of the Western Balkans

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The current global rates of human impact intensification in freshwater ecosystems and their surroundings have caused an alarming loss of freshwater biodiversity and functioning across multiple trophic levels. Particularly vulnerable to anthropogenic pressures are small water bodies (SWB). However, the majority of the evidence is limited to a single community, especially macroinvertebrates, thus leaving us uncertain about cross-community multitrophic responses of freshwater

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Aquatic islands in the sky: 100 years of research on water‐filled tree holes

Petermann

Goßner

2022

Ecology and Evolution

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Water‐filled tree holes are unique ecosystems that may occur high up in tree crowns and are essentially aquatic islands in the sky. Insect larvae, mesofauna, and other organisms colonize the waterbodies and feed on the accumulating detritus. Water‐filled tree holes are not only important habitats for these species but have been used as model systems in ecology. Here, we review more than 100 years of research on tree‐hole inhabiting organisms and show that most studies focus on selected or even single species (most of which are mosquitoes), whereas only few studies examine groups other than insects, especially in the tropics. Using a vote counting of results and a meta‐analysis of community studies, we show that the effects of tree‐hole size and resources on abundance and richness were investigated most frequently. Both were found to have a positive effect, but effect sizes were modulated by site‐specific environmental variables such as temperature or precipitation. We also show that parameters such as the height of the tree holes above ground, tree‐hole density, predation, and detritus type can be important drivers of organism abundance or richness but are less often tested. We identify several important research gaps and potential avenues for future research. Specifically, future studies should investigate the structure, functions, and temporal dynamics of tree‐hole food webs and their cross‐system interactions, for example, with terrestrial predators that act as a connection to their terrestrial surroundings in meta‐ecosystems. Global observational or experimental tree‐hole studies could contribute pivotal information on spatial variation of community structure and environmental drivers of community assembly. With a better understanding of these unique aquatic habitats in terrestrial ecosystems, natural and artificial tree holes can not only serve as model systems for addressing fundamental ecological questions but also serve as indicator systems of the impacts of environmental change on ecosystems.

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Direct and indirect effects of forest management on tree-hole inhabiting aquatic organisms and their functional traits

Cited by 9 publications

References 65 publications

Vertical Stratification of Insect Species Developing in Water-Filled Tree Holes

Vertical Stratification of Insect Species Developing in Water-Filled Tree Holes

Human Impact Induces Shifts in Trophic Composition and Diversity of Consumer Communities in Small Freshwater Ecosystems

Aquatic islands in the sky: 100 years of research on water‐filled tree holes

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