Effects on periphyton and macroinvertebrates from removal of submerged wood in three Ontario lakes

Smokorowski, Karen E.; Pratt, Thomas C.; Cole, William G.; McEachern, Laurie J.; Mallory, Elaine C.

doi:10.1139/f06-104

Cited by 36 publications

(60 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, chl a concentrations of epixylic biofilms in the present study were at the lower end of the range of values reported in former studies (e.g. Bowen et al, 1998;Dodds, 2003, Collier, 2004;Smokorowski et al, 2006), but direct comparisons between the studies were difficult. Beside the fact that different laboratory methods for analysis of chl a concentrations were used in the studies, the differences could be also explained by specific parameters of the sampling sites (lakes versus streams, fast versus slow flowing sites, dissolved nutrient concentrations and temperature, shading by canopy, grazing pressure by invertebrates) and the use of different wood substrates (small veneers, ice-cream sticks, dowels, wood blocks, natural branches), designs of incubation (depth of exposition, incubation in mesh bags, incubation near to the banks) and methods to remove biofilm from the wood surfaces (scraping, brushing, using whole wood piece).…”

Section: Discussioncontrasting

confidence: 74%

Wood in different stream types: Epixylic biofilm and wood-inhabiting invertebrates in a lowlandversusan upland stream

Spänhoff

Cleven

2010

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

-Colonization of incubated wood samples by invertebrates and biofilm was compared between a lowland and an upland stream over a 15 month period. Invertebrate densities increased during the first weeks of incubation and then decreased to rather stable densities during the remaining investigation period in both streams. Within the first incubation weeks invertebrate numbers were significantly higher in the lowland stream. Higher dissolved nutrient concentrations and water temperatures accelerated initial epixylic biofilm development in the lowland stream. Lowest invertebrate numbers on incubated branches in the lowland stream coincided with increased discharge. Extreme low flows in the upland stream resulted in lowest invertebrate numbers on incubated wood during the study. Temporal patterns of biofilm and invertebrates indicated some interactions, but statistical significance was low, which might be caused by the variety of interacting effects. Additionally, invertebrate assemblages of in-stream wood samples were collected from four lowland and four upland streams to examine differences of epixylic invertebrate assemblages between the two stream types. Invertebrate densities were significantly higher on submerged wood from lowland streams than wood from upland streams. However, no clear differences in invertebrate assemblages found between the stream types. The study results show that introduced wood in lowland and upland streams is rapidly colonized by aquatic invertebrates and provided an attachment site for biofilms. Invertebrate numbers during the first two months of incubation significantly overestimate the invertebrate numbers found on resident in-stream wood in lowland and upland streams. Analyses of taxonomic composition of wood-inhabiting invertebrate assemblages from natural wood from lowland and upland streams revealed that each stream displayed a rather specific epixylic fauna.

show abstract

Section: Discussioncontrasting

confidence: 74%

Wood in different stream types: Epixylic biofilm and wood-inhabiting invertebrates in a lowlandversusan upland stream

Spänhoff

Cleven

2010

Ann. Limnol. - Int. J. Lim.

View full text Add to dashboard Cite

show abstract

“…Smokorowski et al, 2006;Sass et al, 2006a, b;Schneider & Winemiller, 2008). Clusters of CWD obviously diversify the bottom topography and increase the heterogeneity of littoral zones.…”

Section: Effects Of Cwd On Habitat Heterogeneitymentioning

confidence: 99%

“…1E, F). Therefore, CWD in lakes can be assigned to different decay classes, as firm fresh wood, wood with loose or absent bark or wood with a clearly rotted surface (Smokorowski et al, 2006). The combination of various threedimensional shapes of CWD with different degrees of wood decay provides a mosaic of habitats and a variety of shelters for lake biota that can support diverse wood-associated communities (Newbrey et al, 2005;Smokorowski et al, 2006).…”

Section: Effects Of Cwd On Habitat Heterogeneitymentioning

confidence: 99%

“…Wooden logs and tree roots also create a hard, stable platform for attachment which is available for colonization all year round by epixylon consisting of algae (Bowen et al, 1998;Vadeboncoeur et al, 2006), as well as rich invertebrate communities (Smokorowski et al, 2006;Glaz et al, 2009;Brauns et al, 2011). Invertebrates are usually facultative users of CWD (France, 1997) and, according to experimental studies, they utilize wood as a place for oviposition, pupation, case-building and emergence (Anderson et al, 1984), as well as refuge (Everett & Ruiz, 1993;Czarnecka et al, 2014) and source of food (Eggert & Wallace, 2007).…”

Section: Effects Of Cwd On Habitat Heterogeneitymentioning

confidence: 99%

“…However, it has been shown that CWD increases the complexity of littoral zones and provides a living place for a wide range of biota (Newbrey et al, 2005;Smokorowski et al, 2006;Glaz et al, 2009), as well as contributing to greater productivity of fish communities (Schindler et al, 2000;Sass et al, 2006). Moreover, CWD as a large carbon sink can be important for carbon sequestration and nutrient fluxes in nearshore areas (Guyette et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coarse woody debris in temperate littoral zones: implications for biodiversity, food webs and lake management

Czarnecka

2015

Hydrobiologia

View full text Add to dashboard Cite

Coarse woody debris (CWD) represents a relatively stable habitat in many lakes with forested shorelines providing a living place for a wide range of species. The spatial complexity of CWD is recognized as an important factor promoting the abundance, diversity and productivity of littoral biota, mainly by providing shelters and moderating predator-prey interactions. However, little is as yet known on the response of different species to various levels of CWD complexity and the effects of the spatial arrangement of CWD on the connectivity between littoral populations. It is also unclear how CWD decay, which modifies the surface complexity of wood and the quality of food, affects the diversity of wood-associated species and trophic interactions. Further research is also needed to recognize the contribution of littoral wood to carbon sequestration and nutrient fluxes, considering factors affecting the CWD decay rate, such as wood species and environmental conditions. CWD resources are systematically depleted by shoreline development which leads to disruptions in the functioning of lake ecosystems. Attempts at restoring CWD habitat provided ambiguous effects on littoral species and therefore better understanding of the role of CWD in lake ecosystems is crucial to the development of successful restoration projects and effective management programmes.

show abstract

Managing aquatic habitat structure for resilient trophic interactions

Ward

Tunney

McCann

2023

Ecological Applications

View full text Add to dashboard Cite

Structural habitat (the three-dimensional arrangement of physical matter, abiotic and biotic, at a location) is a foundational element for the resilience and maintenance of biodiversity, yet anthropogenic development is driving the global simplification of aquatic environments. Resource managers regularly seek to conserve aquatic food webs by increasing structural habitat complexity with expected benefits to fisheries; however, the global effectiveness of such actions is unclear. Our synthesis and theoretical analyses found that the response of a consumer-resource interaction (predatory sportfish and forage fish prey) to the addition of prey refuge habitat differed among systems with low and high rates of biomass transfer from resource to consumer (i.e., biomass potential); stabilization was not the rule. Greater prey refuge habitat availability tended to stabilize systems characterized by high biomass potential while simultaneously increasing consumer densities. In contrast, increasing prey refuge habitat availability in systems characterized by low biomass potential tended to mute energy transfer and moved consumer densities toward local extinction.Importantly, biomass potential and prey refuge can have antagonistic effects on stability and relative consumer densities, and it is therefore important to consider the local conditions of a system when using habitat manipulation as a management measure. Further development of our context-dependent perspective to whole food webs, and across different environments, may help to guide structural habitat management to better restore and protect aquatic ecosystems.

show abstract

Effects on periphyton and macroinvertebrates from removal of submerged wood in three Ontario lakes

Cited by 36 publications

References 47 publications

Wood in different stream types: Epixylic biofilm and wood-inhabiting invertebrates in a lowlandversusan upland stream

Wood in different stream types: Epixylic biofilm and wood-inhabiting invertebrates in a lowlandversusan upland stream

Coarse woody debris in temperate littoral zones: implications for biodiversity, food webs and lake management

Managing aquatic habitat structure for resilient trophic interactions

Contact Info

Product

Resources

About