Influence of habitat and microhabitat on carabid (Coleoptera: Carabidae) assemblages in four stand types

2003 ◽  
Vol 135 (3) ◽  
pp. 337-357 ◽  
Author(s):  
J.L. Pearce ◽  
L.A. Venier ◽  
J. McKee ◽  
J. Pedlar ◽  
D. McKenney
Keyword(s):  
Coarse Woody Debris ◽  
Woody Debris ◽  
Habitat Associations ◽  
Litter Layer ◽  
Forest Types ◽  
Disturbed Habitat ◽  
Northwestern Ontario ◽  
Spruce Stands ◽  
Insight Into ◽  
Important Habitat

AbstractStudies based on presence/absence of a species may provide insight into habitat associations, allowing the distribution of species to be predicted across the landscape. Our objective was to characterize the carabid fauna in three mature boreal forest types (conifer, mixedwood, and deciduous) and a disturbed habitat (clearcut) to provide baseline data on the carabid species inhabiting the major forest types of boreal northwestern Ontario. Only spring-active carabids were considered for logistical reasons. We further identified the coarse woody debris structure and microhabitat characteristics within these stand types to try to refine our ability to predict the within-stand occurrence of carabids. We found the carabid composition of deciduous stands (mixedwood and aspen) similar and typical of the carabid fauna found in mixedwood forest in other nearby studies. The important feature of these forest types may be the presence of a deciduous leaf litter layer. In contrast, spruce stands contained fewer species and individuals and a distinct carabid fauna. As predicted, the clearcut habitats were dominated by open habitat species, although the fauna was dissimilar to what was recorded in clearcut habitats in other studies within northwestern Ontario. Coarse woody debris appeared to be an important habitat attribute for several carabid species in clearcut habitats.

The importance of beaver lodges in structuring littoral communities in boreal headwater lakes

1997 ◽  
Vol 75 (7) ◽  
pp. 1009-1013 ◽  
Author(s):  
R. L. France
Keyword(s):  
Coarse Woody Debris ◽  
Rocky Shore ◽  
Woody Debris ◽  
Benthic Macroinvertebrate ◽  
Northwestern Ontario ◽  
Headwater Lakes ◽  
Littoral Zones ◽  
Large Populations ◽  
Macrophyte Growth ◽  
Important Habitat

The littoral zones of many boreal headwater lakes in northwestern Ontario are composed of rocks, boulders, and sand, with sparse macrophyte growth. This study investigated the possibility that abandoned beaver lodges might structure littoral communities in these systems through providing accumulations of coarse woody debris and entrapped sediment. The richness and abundance of 10 benthic macroinvertebrate taxa, 6 species of small fishes, and 2 species of amphibians were found to be significantly elevated near beaver lodges compared with areas of sand and rocks otherwise characteristic of the littoral zones in these lakes. Beaver in Ontario are generally regarded as a nuisance or a resource; wildlife managers therefore encourage extensive trapping before large populations can become established. The results of this study suggest that beaver provide an important habitat resource for littoral communities in boreal headwater lakes. As a result, endorsement of limiting beaver populations through increased trapping should be reexamined for regions containing macrophyte-impoverished lakes with a rocky shore.

scholarly journals Habitat relationships of reptiles in pine beetle disturbed forests of Alabama, U.S.A. with guidelines for a modified drift-fence sampling method

2010 ◽  
Vol 56 (4) ◽  
pp. 411-420 ◽  
Author(s):  
W. B. Sutton ◽  
Y. Wang ◽  
C. J. Schweitzer
Keyword(s):  
Coarse Woody Debris ◽  
Woody Debris ◽  
Management Strategies ◽  
Canopy Cover ◽  
Habitat Associations ◽  
Dendroctonus Frontalis ◽  
Litter Depth ◽  
Drift Fence ◽  
Habitat Gradient ◽  
Pine Beetle

Abstract Understanding vertebrate habitat relationships is important to promote management strategies for the longterm conservation of many species. Using a modified drift fence method, we sampled reptiles and compared habitat variables within the William B. Bankhead National Forest (BNF) in Alabama, U.S.A from April 2005 to June 2006. We captured 226 individual reptiles representing 19 species during 564 total trap nights. We used canonical correspondence analysis to examine habitat associations for the reptiles sampled and we detected a distinct habitat gradient ranging from sites with greater litter depth and percent canopy cover to more open sites with greater woody, herbaceous, and coarse woody debris (CWD) coverage, and CWD volume. Little brown skinks Scincella lateralis and eastern worm snakes Carphophis a. amoenus were associated with sites with greater litter depth and canopy cover, whereas eastern fence lizards Sceloporus undulatus, copperheads Agkistrodon contortrix, and gray ratsnakes Pantherophis spiloides were associated with sites possessing greater CWD coverage and volume. We found that disturbances due to the southern pine beetle Dendroctonus frontalis were likely important for influencing reptile distributions through the creation of canopy gaps and fallen coarse woody debris. Compared to other studies, our modified drift-fence trap technique was successful for sampling larger snake species (66 snakes in 564 trap nights). We have also provided detailed schematics for constructing drift fence array and box traps used in this study.

Effect of small-scale forest management on fungivorous Coleoptera in old-growth forest fragments in southeastern Ontario, Canada

2007 ◽  
Vol 139 (1) ◽  
pp. 118-130 ◽  
Author(s):  
Rebecca M. Zeran ◽  
Robert S. Anderson ◽  
Terry A. Wheeler
Keyword(s):  
Forest Management ◽  
Coarse Woody Debris ◽  
Woody Debris ◽  
Hardwood Forests ◽  
Small Scale ◽  
Forest Fragments ◽  
Forest Types ◽  
Old Growth ◽  
Old Growth Forest ◽  
Species Analysis

AbstractFungivorous Coleoptera were sampled from old-growth and managed (selectively logged in 1999) hemlock–hardwood forests in southeastern Ontario to examine the effect of small-scale forest management on fungivore diversity in forest fragments. Sampling using flight-intercept traps and trunk-window traps for 22 weeks in 2003 yielded 11 888 beetles representing 73 species in 11 target families (Anthribidae, Cerylonidae, Endomychidae, Erotylidae, Leiodidae, Mycetophagidae, Scaphidiidae, Sphindidae, Tenebrionidae, Trogossitidae, and Zopheridae). The leiodid subfamily Leiodinae was the dominant taxon (10 386 individuals, 38 species). While old-growth stands had no recent logging and had higher volumes of coarse woody debris, species diversity and composition of fungivorous Coleoptera were similar between forest types, suggesting that the stand differences measured (recent logging history, volume of coarse woody debris) did not have a significant effect on beetle diversity in this study. Indicator species analysis showed that Triplax macra LeConte (Erotylidae) was strongly associated with old-growth stands, while Anisotoma blanchardi (Horn), Anogdus obsoletus (Melsheimer), Agathidium sp. 1 (Leiodidae), and Mycetina perpulchra (Newman) (Endomychidae) were associated with managed stands. The lack of difference observed between stand types may be related to the small size of the forest fragments or the relatively small scale of the disturbance.

scholarly journals Snag Longevity in Managed Northern Hardwoods

2006 ◽  
Vol 23 (3) ◽  
pp. 215-217 ◽  
Author(s):  
Mariko Yamasaki ◽  
William B. Leak
Keyword(s):  
New England ◽  
Coarse Woody Debris ◽  
Woody Debris ◽  
Decay Process ◽  
Wildlife Habitat ◽  
Habitat Conditions ◽  
Forest Types ◽  
Growth Study ◽  
Bartlett Experimental Forest ◽  
Changes Over Time

Abstract Little information on standing snag and coarse woody debris longevity exists for New England forest types. Forest managers thus lack the information on changes over time of the habitat components influenced by the decay process. We examined the fate of 568 snags that occurred on a long-termhardwood growth study on the Bartlett Experimental Forest, NH. Approximately one-third of the oldest dense hardwood sawtimber snags were still standing 20 to 25 years after death and 17% were still visible on the ground. Seventeen percent of the older moderately dense hardwood sawtimbersnags were standing 15 to 20 years after death, 50% were still visible on the ground, and 33% had decomposed. Pole-sized snags appear to stand for shorter times than sawtimber and large sawtimber snags. Percentage of decomposed poles increased steadily throughout the time periods.These results can be most useful in predicting future wildlife habitat conditions in managed stands, as well as providing better rates of decomposition information when modeling coarse woody debris.

scholarly journals Carbon Stocks of Coarse Woody Debris in Central African Tropical Forests

2018 ◽  
Vol 3 (2) ◽  
pp. 142 ◽  
Author(s):  
Romeo Ekoungoulou ◽  
Shukui Niu ◽  
Fousseni Folega ◽  
Donatien Nzala ◽  
Xiaodong Liu
Keyword(s):  
Climate Change ◽  
Carbon Storage ◽  
Tropical Forests ◽  
Reference Values ◽  
Coarse Woody Debris ◽  
Forest Ecosystems ◽  
Woody Debris ◽  
Carbon Stocks ◽  
Selective Logging ◽  
Forest Types

<p><em>Coarse </em><em>W</em><em>oody </em><em>D</em><em>ebris (CWD; defined here as fallen and standing dead trees and tree branches) is a critical-structural and functional component of forest ecosystems that typically comprises a large proportion of total aboveground carbon storage. Coarse woody debris estimation for the tropics is uncommon, and little is known about how carbon storage in CWD will respond to climate change. Given the predominant role that tropical forests play in global carbon cycling, this information gap compromises efforts to forecast climate change impacts on terrestrial carbon balance. In this study, we aimed to identify the variation in </em><em>C</em><em>oarse </em><em>W</em><em>oody </em><em>D</em><em>ebris (CWD) stocks between forest types (Old-growth and selective logging forests) and among the plots in Ipendja mixed lowland terra firme tropical rainforest (central Africa), and we examined the consequence for CWD carbon stocks estimation. The study area is located at Ipendja forest management unit (UFA), close to Dongou district (Likouala Department), in Northern Republic of Congo. Data collection were done with eight rectangular plots, each 25 x 200 m (0.5 ha). The method of line intercepts sampling has been used in each studied site. A total number of 135 CWD samples of diameter </em><em>³</em><em> 10 cm in the studied plots have been recorded. It was obvious that stock of coarse woody debris in Mokelimwaekili site (mean: 19.96 Mg ha<sup>-1</sup>; sum: 79.84 Mg ha<sup>-1</sup>) were higher than those of Sombo site (mean: 8.9 Mg ha<sup>-1</sup>; sum: 35 Mg ha<sup>-1</sup>).</em><em> </em><em>There was a significance difference in Ipendja evergreen forest about CWD stocks across two forest types and plots. </em><em>This finding suggests that values vary among forest types and that separate reference values should be adopted for estimates of undisturbed forest carbon stocks in the different ecosystems in Congo basin. Different reference values represent the variability of CWD among forest types and contribute to reducing uncertainties in current estimates of carbon stock in central African forest ecosystems.</em><em></em></p>

A scientific approach for the application of criteria for setting up multiannual programmes and zonal afforestation plans in the framework of the council regulation No. 2080/92

1994 ◽  
Vol 59 ◽  
Author(s):  
N. Lust
Keyword(s):  
Social Aspects ◽  
Multiple Use ◽  
Forest Types ◽  
Good Insight ◽  
Planning Strategy ◽  
Scientific Approach ◽  
New Forest ◽  
Council Regulation ◽  
Economic Constraints ◽  
Insight Into

A  successful and justified multiannual afforestation programme requires a good  insight into the objectives and awareness of the constraints of the new  forests, a planning strategy and a thorough research on the missing aspects.      Socio-economic constraints mainly relate to social aspects of the farmers  involved, who must be assured of a viable income.     Therefore the new forest types and silvicultural systems should produce a  reasonable return, without neglecting however the global multiple use  objective.     Planning has to deal with specific goals, the area of new forests, the  location and size, accompanying measures and a time scale.

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