scholarly journals High Elevation Refugia forBombus terricola(Hymenoptera: Apidae) Conservation and Wild Bees of the White Mountain National Forest

2017 ◽  
Vol 17 (1) ◽  
pp. 4 ◽  
Author(s):  
Erika M. Tucker ◽  
Sandra M. Rehan
Keyword(s):  
High Elevation ◽  
National Forest ◽  
Wild Bees ◽  
White Mountain National Forest

Fifty years of natural revegetation on a landslide in Franconia Notch, New Hampshire, U.S.A.

2001 ◽  
Vol 79 (12) ◽  
pp. 1477-1485 ◽  
Author(s):  
Valter Francescato ◽  
Michele Scotton ◽  
Daniel J Zarin ◽  
James C Innes ◽  
David M Bryant
Keyword(s):  
New Hampshire ◽  
Floristic Composition ◽  
High Elevation ◽  
Aerial Photographs ◽  
National Forest ◽  
Betula Alleghaniensis ◽  
Betula Papyrifera ◽  
Vegetation Zones ◽  
Natural Revegetation ◽  
White Mountain National Forest

We describe natural revegetation dynamics on landslides that occurred in 1948 and 1959 in Franconia Notch, New Hampshire, U.S.A. Analysis of aerial photographs from 1958, 1978, and 1996 indicate that the rate of revegetation of the landslide surface decreased over time, probably because of early saturation of easily colonized sites. In the 1948 landslide, we found that width and slope steepness within the landslide influenced the revegetation rate, while elevation did not. On the 1959 landslide, none of the tested factors were significantly correlated with vegetation recovery. Recolonization of narrow erosional zones tended to occur from the landslide edges inward; recolonization of wider erosional zones also occurred outward from islands of vegetation within the landslide. Floristic inventories were conducted in 1956 and 1996 using the point-centered quarter method and fixed plots of 1 m2 and were processed using cluster analysis, resulting in a grouping of the 1956 and 1996 plots into four and five clusters, respectively. The 1956 clusters consisted of exclusively herbaceous vegetation (zones with greater erosion) or prevalently shrub-arboreal vegetation, with Betula cordifolia Regel. dominant at high elevation and Betula papyrifera Marsh. and Betula alleghaniensis Britton dominant at low to middle elevation. The 1996 vegetation was characterized by prevalence of arboreal canopy made up of differing proportions of birch species, which varied with elevation.Key words: disturbance, floristic composition, regeneration, recolonization, succession, White Mountain National Forest.

scholarly journals Climate-Related Distribution Shifts of Migratory Songbirds and Sciurids in the White Mountain National Forest

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 84
Author(s):  
Aimee Van Tatenhove ◽  
Emily Filiberti ◽  
T. Scott Sillett ◽  
Nicholas Rodenhouse ◽  
Michael Hallworth
Keyword(s):  
Bird Species ◽  
High Elevation ◽  
National Forest ◽  
Spring Temperature ◽  
Mammal Species ◽  
Warm Spring ◽  
Migratory Songbirds ◽  
White Mountain National Forest ◽  
Spring Temperatures ◽  
Distribution Shifts

Climate change has been linked to distribution shifts and population declines of numerous animal and plant species, particularly in montane ecosystems. The majority of studies suggest both that low-elevation avian and small mammal species are shifting up in elevation and that high-elevation avian communities are either shifting further upslope or relocating completely with an increase in average local temperatures. However, recent research suggests numerous high elevation montane species are either not shifting or are shifting down in elevation despite the local increasing temperature trends, perhaps as a result of the increased precipitation at high elevations. In this study, we examine common vertebrate species distributions across the Hubbard Brook valley in the White Mountain National Forest, including resident and migratory songbirds and small mammals, in relation to historic spring temperature and precipitation. We found no directional change in distributions through time for any of the species. However, we show that the majority of low-elevation bird species in our study area respond to warm spring temperatures by shifting upslope. All bird species that shifted were long-distance migrants. Each low-elevation migrant species responded differently to warm spring temperatures, through upslope distribution expansion, downslope distribution contraction, or total distribution shift upslope. In contrast, we found a majority of high-elevation bird species and both high- and low-elevation mammal species did not shift in response to spring temperature or precipitation and may be subject to more complex climate trends. The heterogeneous response to climate change highlights the need for more comprehensive studies on the subject and careful consideration for appropriate species and habitat management plans in northeastern montane regions.

scholarly journals Diversity of Wild Bees along Elevational Gradient in an Agricultural Area in Central Java, Indonesia

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Imam Widhiono ◽  
Eming Sudiana ◽  
Darsono Darsono
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Elevational Gradient ◽  
High Elevation ◽  
Agricultural Area ◽  
Wild Bees ◽  
Central Java ◽  
Wiener Diversity Index ◽  
Pollinator Community ◽  
Study Sites

Increases in mean temperature affect the diversity and abundance of wild bees in agricultural ecosystems. Pollinator community composition is expected to change along an elevational gradient due to differences in the daily ambient temperature. This study investigated the diversity and abundance of wild bees in an agricultural area along an elevational gradient in Central Java, Indonesia. Wild bees were collected using a sweep net in 40 green bean (Phaseolus vulgaris) cultivation sampling locations at seven different elevations (8, 108, 224, 424, 644, 893, and 1017 m above sea level). Species diversity was determined using the Shannon–Wiener diversity index. We identified 932 individuals from 8 species of wild bee belonging to 3 families. The family Apidae was predominant, with 6 species, while only 1 species was found from each of Megachilidae and Halictidae. Across the study sites, diversity increased with increasing elevation (H′= 1.4,D= 0.25, andE= 0.78 at low elevation toH′= 2.04,D= 0.13, andE= 0.96 at high elevation), and higher numbers of species were found at middle and high elevations. Species richness and abundance increased linearly with increasing elevation, and species diversity was highest at middle elevations.

scholarly journals Database for chemical contents of streams on the White Mountain National Forest.

2001 ◽  
Author(s):  
James W. Hornbeck ◽  
Michelle M. Alexander ◽  
Christopher Eagar ◽  
Joan Y. Carlson ◽  
Robert B. Smith
Keyword(s):  
National Forest ◽  
White Mountain National Forest ◽  
Chemical Contents

Bat Habitat Use in White Mountain National Forest

1996 ◽  
Vol 60 (3) ◽  
pp. 625 ◽  
Author(s):  
Rachel A. Krusic ◽  
Mariko Yamasaki ◽  
Christopher D. Neefus ◽  
Peter J. Pekins
Keyword(s):  
Habitat Use ◽  
National Forest ◽  
White Mountain National Forest

Reply to the comment by Bailey et al. on “Long-term decline of sugar maple following forest harvest, Hubbard Brook Experimental Forest, New Hampshire”

2019 ◽  
Vol 49 (7) ◽  
pp. 863-864
Author(s):  
John J. Battles ◽  
Natalie L. Cleavitt ◽  
Chris E. Johnson ◽  
Timothy J. Fahey
Keyword(s):  
Sugar Maple ◽  
Eastern North America ◽  
National Forest ◽  
Hubbard Brook Experimental Forest ◽  
Hubbard Brook ◽  
Soil Nutrition ◽  
Successful Recruitment ◽  
White Mountain National Forest ◽  
Forest Practice

Sugar maple decline in eastern North America is caused by a complex combination of factors, with soil nutrition being one of several important determinants. Given the complexity of sugar maple population dynamics and the geographic extent of the species, we support Bailey et al.’s (2019, Can. J. For. Res. 49(7), doi: 10.1139/cjfr-2018-0207 ) argument to interpret results from Cleavitt et al. (2018, Can. J. For. Res. 48(1): 23–31, doi: 10.1139/cjfr-2017-0233 ) with due caution. The experiment at Hubbard Brook Experimental Forest represents an atypical application of contemporary forest practice in the White Mountain National Forest; however, some comments in Bailey et al. (2019) missed the point; others inaccurately characterized our paper. Cleavitt et al.’s (2018) 30-year record of vegetation recovery following whole-tree harvest documented a worrisome inability of a sugar maple population that successfully established after harvest to maintain its position in the understory. This lack of persistence on base-poor soils such as those in the mid and upper elevations of Hubbard Brook Experimental Forest suggests that the successful recruitment of sugar maple is not guaranteed.

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