共查询到19条相似文献,搜索用时 380 毫秒
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2018年11月至2019年2月,采用样线法对舞钢石漫滩国家湿地公园的鸟类的种类与数量迚行了调查,结果:①共记录到鸟类13目28科59种,其中国家II级重点保护鸟类2种,河南省重点保护鸟类3种;优势种5种,常见种46种,稀有种8种;多样性指数2.666;均匀度指数0.6566;留鸟34种,夏候鸟3种,冬候鸟17种,旅鸟5种;东洋界8种,古北界23种,广布种28种;②鸟类多样性指数:农田生境(2.2522)湿地生境(2.3651)林地生境(2.6246);均匀度指数:湿地生境(0.6456)农田生境(0.6997)林地生境(0.7717);优势度指数:林地生境(0.1201)农田生境(0.1505)湿地生境(0.1515);3种生境鸟类群落的相似性:林地生境和农田生境的相似性最高(0.7636),和湿地生境的相似性最低(0.2899)。 相似文献
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沾益海峰自然保护区鸟类资源及其保护与开发利用对策 总被引:2,自引:0,他引:2
迄今为止 ,沾益海峰自然保护区及其周围邻近地区共记录鸟类 16 8种 ,隶属 18目 ,4 5科 ,另 4亚科。其中森林生境类型鸟类 71种 ,占 4 2 2 % ;田园村寨生境类型鸟类 4 8种 ,占 2 8 6 % ;河流水域生境类型鸟类 4 9种 ,占 2 9 2 %。对其主要农林益鸟、经济资源鸟类和国家重点保护鸟类进行资源评价。并提出了今后保护对策和合理开发利用措施。 相似文献
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厦门高崎国际机场鸟类调查及鸟撞防治的对策 总被引:9,自引:0,他引:9
厦门机场及周边活动的常见鸟类共有30科,90种,在整个锥形面内对飞机飞行构成危险的鸟类,主要是白鹭Egretta garzetta,中白鹭E.intermedia,普通鸬鹚Phalacrocorax carbo,黑翅鸢Elanus caeruleus,山斑鸠Streptopelia orientalis,家鸽等大型鸟类;根据各种鸟类习性及其栖息生境的特点分析,提出了以鸣枪,放煤气炮等方式驱赶鸟类。改变鸟类栖息生境以降低鸟类的种群数量等防止鸟撞的对策。 相似文献
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2014—2023年6月和7月份,采用样线法对阿鲁科尔沁旗南部不同生境夏季鸟类物种组成及分布特点进行实地调查。共记录到鸟类117种,隶属于18目40科,包括非雀形目鸟类17目23科82种,雀形目鸟类17科35种;夏候鸟74种,留鸟27种,旅鸟16种;国家Ⅰ级重点保护鸟类3种,国家Ⅱ级重点保护鸟类17种。鸟类区系组成以古北种为主。3种生境中分布的鸟类种数由多到少依次为湿地(99种)、林地(35种)、草原(34种),鸟类种数在8 a期间逐年增加。将进一步加强湿地生境的保护管理,重视林地和草原生境鸟类的监测,对阿鲁科尔沁旗南部夏季鸟类多样性保护具有重要意义。 相似文献
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Pedro Pereira Carlos Godinho Marisa Gomes João Eduardo Rabaça 《Annals of Forest Science》2014,71(1):33-41
Context
The remaining riparian stretches are often the unique suitable habitats for forest breeding birds in Mediterranean landscapes undergoing long-term changes. Understanding the interactions between riparian zones and their surroundings is critical to establish successful management actions.Aims
We assessed the influence of surrounding matrix on riparian bird communities and the use of riparian galleries as surrogate habitats for the forest passerine communities of southwestern Iberia.Methods
We used point counts in three simultaneous sampling stations, one in the riparian gallery and two in the adjacent matrix. Three matrix types were selected with a decreasing tree density gradient: dense montado, sparse montado, and open agricultural areas. Data were analysed with redundancy analysis and differences in species’ occurrences were tested with one-way ANOVA.Results
In riparian galleries, we found bird species belong to three ecological guilds: riparian, woodland, and edge guilds. The richness of bird guilds and the occurrence of some species depended on the surrounding matrix type. Riparian bird richness was constant in all surrounding matrices, woodland bird guild was richer in galleries embedded in dense montados, and edge guild in riparian galleries surrounded by sparse montados. Five among 19 assessed species were influenced by matrix type, within particular a few strictly riparian species. Species richness increased close to riparian galleries, due to the increase in habitat heterogeneity and resource availability for birds in densely vegetated riversides. However, the occurrence of some bird species differed according to the type of surrounding matrix.Conclusion
The matrix type explained most of the variance in riparian bird assemblages. Some woodland birds have used riparian galleries as surrogate habitat. Our study suggests that land use in the surrounding matrices must be taking into account for the management and rehabilitation of watercourses and bird conservation actions. 相似文献12.
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Although intensively managed pine forests are common in the southeastern US, few studies describe how combinations of mechanical (MSP) and chemical site preparation (CSP) and herbaceous weed control (HWC) techniques affect bird communities that use early successional habitats within young pine forests. Therefore, we examined effects of six treatments of increasing management intensity via combinations of MSP (strip-shear and wide spacing or roller chop and narrow spacing) and CSP (application or no application) treatments with banded or broadcast HWC on bird communities in six loblolly pine (Pinus taeda) plantations in the Coastal Plain of North Carolina, USA, for 8 years following site preparation. Wide pine spacing and strip-shear MSP increased bird abundance and species richness over narrow spacing and chopped MSP for 6 years after planting. Chemical SP reduced bird abundance in year 2, increased bird abundance in year 6, had no effect on abundance after year 7, and did not affect species richness in any year. Total bird abundance and species richness were similar between banded and broadcast HWC. Site preparation and HWC had no effect on bird diversity and bird communities were most similar in treatments of similar intensity. Site preparation and HWC had few or no effects on birds based upon migratory status, habitat association, or conservation value. The addition of chemical site preparation or HWC had little effect on birds beyond pine spacing, and bird abundance was not proportional to management intensity. Although we observed treatment effects, all treatments provided habitat used by a variety of bird species, and pine plantations may play an increasingly important role in bird conservation as forests become fragmented and converted to other land uses and as natural processes that create early successional habitat, such as fire, are suppressed. 相似文献
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Richard B. Chandler David I. King Carlin C. Chandler 《Forest Ecology and Management》2009,258(7):1669-1676
Many shrubland bird species are declining in eastern North America and as a result forest managers have used a variety of techniques to provide breeding habitat for these species. The maintenance of permanent “wildlife openings” using prescribed burns or mechanical treatments is a widely used approach for providing habitat for these species, but there have been no studies of the effects of treatment regime on bird abundance and nest survival in managed wildlife openings. We studied shrubland birds in wildlife openings on the White Mountain National Forest (WMNF) in New Hampshire and Maine, USA, during 2003 and 2004. We analyzed bird abundance and nest survival in relation to treatment type (burned versus mowed), treatment frequency, time since treatment, and patch area. We found that wildlife openings provided habitat for shrubland birds that are not present in mature forest. There was relatively modest support for models of focal bird species abundance as a function of treatment regime variables, despite pronounced effects of treatment on habitat conditions. This probably was attributable to the combined effects of complex site histories and bird site fidelity. Overall nest success (52%) was comparable to other types of early-successional habitats in the region, but there were few supported relationships between nest survival and treatment variables. We conclude that wildlife openings provide quality habitat for shrubland birds of high conservation interest as long as managers ensure treatment intervals are long enough to permit the development of woody vegetation characteristic of the later stages of this sere. Also, wildlife openings should be large enough to accommodate the territory sizes of all target species, which was ≥1.2 ha in this study. 相似文献
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2008年3月,根据上涉湖湿地自然保护区的地理状况和植被情况划分生境类型,在4种生境中选择典型样区设定样线,采用样线法对鸟类进行调查.共记录到鸟类144种,隶属15目35科,其中留鸟57种、夏候鸟15种、冬候鸟64种、旅鸟8种;古北种75种、东洋种48种、广布种21种.分别采用Shannon-wiener指数、Pielou指数和G-F指数对保护区鸟类物种多样性进行分析,结果表明,鸟类群落丰富度为林地>浅滩>农田>水域;采用Jaccard指数进行鸟类群落间相似性分析结果,农田和林地的鸟类群落相似程度最高.分析了保护区鸟类资源保护现状和存在的问题,提出了鸟类资源保护建议. 相似文献
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Despite the fact that tree plantations are not able to completely replace the ecological function of natural forests, the present study proposes to evaluate for which bird species or avian groups tree plantations act as habitat in fragmented landscape in southern Brazil. We compared the richness and abundance of bird species in a natural forest to adjacent plantations of Araucaria, a native tree species and of pine, an exotic plant in South America. Moreover, we evaluated the impact of tree plantations on richness of avian groups with different levels of dependence on forest habitat, feeding habits and foraging strata as well as on threatened species. The fixed 100 m radius point-counts method was used. A total of 114 bird species were recorded in all areas. Of those, 93 occurred in natural forest, 87 in Araucaria plantations and 81 in pine plantations. These results indicate that richness and abundance were lower in the pine plantations than in the natural forest and in the Araucaria plantations. Araucaria plantations can be used by a high number of bird species and their richness was not significantly lower than that observed in the adjacent natural forest. Our results suggest that Araucaria plantations could act as habitat for a large number of bird species, especially for forest-dependents species, insectivores, frugivores and species at different threat categories. 相似文献
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We monitored breeding bird communities and vegetation both before and after Hurricane Katrina category 2 winds severely damaged extensive bottomland hardwood forest of the Pearl River basin, south Louisiana. Many trees were felled by wind, most others were stripped of leaves and branches, and the canopy opened considerably (57%). Blackberry thickets sprouted and expanded to cover almost all of what was previously a patchily open forest understory. The bird community changed distinctively following the hurricane, driven primarily by increased density of species that prefer dense understory (regenerating) habitat. Individual species that increased significantly in density included one year-round resident, Carolina wren, and five breeding migrants, white-eyed vireo, Swainson's warbler, Kentucky warbler, hooded warbler, and yellow-breasted chat. These patterns were predictable responses to the opened canopy and increased density of understory vegetation. However, over three years following the storm, most species, especially canopy breeders, showed no distinct numerical response to the hurricane, which suggests that the initial bird community was resistant to hurricane disturbance. Only one species, Acadian flycatcher, declined significantly after the hurricane, presumably because of loss of its preferred open understory breeding and feeding habitat. Our results thus document and reinforce the important role hurricanes play along the Gulf coast in structuring forest bird communities by altering understory habitat. We expect habitat changes will continue as invasive plant species further change forest community structure, and as large storms increase in frequency in relation to global climate change. Thus, we also expect continued changes to the bird community, which may include additional future declines. 相似文献
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David I. King Richard B. Chandler Scott Schlossberg Carlin C. Chandler 《Forest Ecology and Management》2009
Many conservationists are concerned about reports of declining populations of scrub-shrub birds. Wildlife opening management, involving repeatedly burning or mechanically treating early-successional stands, is one strategy for creating habitat for these species, but this practice is costly. Some silvicultural treatments also create scrub-shrub habitat and have the advantage of potentially generating revenue, but the relative effectiveness of wildlife opening management and silviculture for creating bird habitat is not known. During 2004 and 2005, we compared scrub-shrub bird abundance, nest success, and habitat characteristics between wildlife and silvicultural openings in western Massachusetts to determine whether the habitats created by these practices are equivalent for birds. We recorded 1927 detections of 31 scrub-shrub bird species during the course of the study and monitored 368 nests. We found that although most species were present in both treatments, many differed in abundance between wildlife and silvicultural openings, including several species of high conservation concern. These differences were attributable to differences in habitat characteristics between treatments. The overall probability of a nest surviving to fledging was 0.43, and did not differ between wildlife and silvicultural openings. Our results indicate that the habitat quality of wildlife and silvicultural openings is not equivalent for scrub-shrub birds, but the two management approaches serve as complementary strategies for maintaining these declining species. 相似文献
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Spatial scale is an important consideration when managing forest wildlife habitat, and models can be used to improve our understanding of these habitats at relevant scales. Our objectives were to determine whether stand- or microhabitat-scale variables better predicted bird metrics (diversity, species presence, and abundance) and to examine breeding bird response to clearcut size and age in a highly forested landscape. In 2004-2007, vegetation data were collected from 62 even-aged stands that were 3.6-34.6 ha in size and harvested in 1963-1990 on the Monongahela National Forest, WV, USA. In 2005-2007, we also surveyed birds at vegetation plots. We used classification and regression trees to model breeding bird habitat use with a suite of stand and microhabitat variables. Among stand variables, elevation, stand age, and stand size were most commonly retained as important variables in guild and species models. Among microhabitat variables, medium-sized tree density and tree species diversity most commonly predicted bird presence or abundance. Early successional and generalist bird presence, abundance, and diversity were better predicted by microhabitat variables than stand variables. Thus, more intensive field sampling may be required to predict habitat use for these species, and management may be needed at a finer scale. Conversely, stand-level variables had greater utility in predicting late-successional species occurrence and abundance; thus management decisions and modeling at this scale may be suitable in areas with a uniform landscape, such as our study area. Our study suggests that late-successional breeding bird diversity can be maximized long-term by including harvests >10 ha in size into our study area and by increasing tree diversity. Some harvesting will need to be incorporated regularly, because after 15 years, the study stands did not provide habitat for most early successional breeding specialists. 相似文献