The importance of dynamic open-canopy woodlands for the conservation of a specialist butterfly species

Habel, Jan Christian; Teucher, Mike; Gros, Patrick; Gfrerer, Verena; Eberle, Jonas

doi:10.1007/s10980-022-01472-2

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…The observed trend was not restricted to one particular habitat type, but prevailed in grasslands, open woodlands and peat bogs, each with their set of more or less narrow habitat specialists. Five of our focal species, as well as several of the butterfly species now extinct in Denmark, are affiliated with open woodlands and forest meadows (Habel et al 2022b), which to a large extent have been lost to the intensification of plantation forestry and to less extent to game management. Similarly, drainage as part of intensified forestry has negatively affected peat bogs, which in eastern Denmark mainly occur in forest landscapes.…”

Section: Oddsmentioning

confidence: 99%

Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019

Bjerregård

Baastrup‐Spohr

Markussen

et al. 2023

Preprint

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Many butterfly populations respond negatively to land-use intensification in human-dominated landscapes. However, networks of protected sites have been established with the aim to halt species loss. We undertook annual surveys of all populations of 22 uncommon butterfly species in eastern Denmark during the period 2014-2019 and compared to a systematic atlas survey done 1989-1993, in order to assess trends in regional occupancy of species. Three out of 22 species went regionally extinct between 1993 and 2015. One species sustained a single population through the study period. Logistic regression for the remaining 18 species showed 10 to be in strong decline from 1993 to 2015, two showed a declining trend and six had stable trends. For all species except one, the declining trend continued 2015-2019. For five species, a sustained strong decline was evident. In 1993, the total count of populations for all 22 butterfly species was 565, which by 2019 had declined to 158 populations (a 72 % loss over 26 years). From 2015 to 2019, the total count of populations further shrank from 200 to 158 (a 21 % decline over just four years). Legal protection of areas (Natura 2000 and Danish Nature Protection Act Clause 3) was, unexpectedly, not associated with lower probability of local extinction for butterfly population. The observed sustained decline across species suggests an overall low efficiency of the network of protected sites, probably due to a combination of misguided management regimes and payment of extinction debts from the past.

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Section: Oddsmentioning

confidence: 99%

Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019

Bjerregård

Baastrup‐Spohr

Markussen

et al. 2023

Preprint

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“…Hutan memegang peranan penting dalam menjaga ekosistem demi keberlanjutan makhluk hidup. Sebagai satu ekosistem, hutan juga merupakan habitat bagi berbagai flora dan fauna (Habel et al, 2022). Provinsi Bengkulu yang secara geografis terletak di sekitar garis ekuator memberikan alam tropis yang cukup kaya, dengan iklim hangat dan kelembaban yang baik sepanjang tahun.…”

Section: A Latar Belakangunclassified

Peningkatan Kapasitas LSM Tiger Heart Dalam Melakukan Analisis Tutupan Lahan

Vatresia,

Utama,

Mase

et al. 2023

JMM

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Abstrak: Deforestasi yang terjadi di Taman Buru Semidang Bukit Kabu (SBK) Provinsi Bengkulu didominasi oleh alih fungsi lahan menjadi perkebunan. Masifnya pembukaan perkebunan dengan cara penebangan hutan secara liar membuat hutan SBK kehilangan fungsinya sebagai ekosistem serta habitat bagi harimau sumatera. Kegiatan pengabdian pada masyarakat berbasis riset ini bertujuan untuk membantu Lembaga Swadaya Masyarakat, Tiger Heart sebagai mitra dalam pengabdian ini, dalam mendukung upaya konservasi yang menjadi kegiatan utama mereka. Peningkatan softskill kepada lima orang mitra diharapkan dapat memberikan dampak lebih luas bagi penggiat konservasi melalui penyediaan data analisa tutupan lahan. Pelaksanaan pengabdian ini terbagi menjadi tiga tahap yaitu pengumpulan data, pelaksanaan pelatihan, dan evaluasi. Pengumpulan data dilakukan dengan melakukan survey lapangan untuk mengetahui kondisi aktual di wilayah hutan SBK. Hasil pemantauan di lapangan diketahui bahwa para perambah hutan melakukan perubahan wilayah hutan menjadi lahan pertanian yang disebabkan oleh kebutuhan ekonomi, rendahnya pendidikan, serta kurangnya pengetahuan dan kesadaran mengenai batas dan fungsi hutan SBK sebagai habitat harimau sumatera. Setelah itu dilakukan pelatihan bagi mitra untuk menganalisis perubahan tutupan lahan melalui perangkat lunak dan data remote sensing. Berdasarkan empat kriteria pengukuran yang terdiri dari pengalaman penggunaan aplikasi, pengetahuan ketersediaan data, kemampuan analisis, dan kemandirian, terjadi peningkatan rata-rata 45% pada mitra yang telah dilatih.Abstract: The deforestation of Taman Buru Semidang Bukit Kabu (SBK) in Bengkulu Province has been caused by the conversion of land into plantations. Unfortunately, this has resulted in the loss of the SBK forests' role as an ecosystem and habitat for Sumatran tigers due to illegal logging and mass clearing of plantations. This research-based community service initiative aims to support the conservation efforts of Non-Governmental Organizations like Tiger Heart. The objective of our project endeavours to augment the interpersonal abilities of our five partner members and furnish conservationists with comprehensive land cover analysis data. To achieve this, we conducted field surveys to gather data that revealed forest encroachers converted forest areas into agricultural land due to economic needs, low education, and a lack of awareness about the boundaries and functions of SBK forests as Sumatran tiger habitats. This program provided training to our partners on how to analyze land cover changes through remote sensing software and data. The training resulted in an average improvement of 45% in partner's knowledge and skills, measured through application experience, data availability, analytical skills, and independence. Our ultimate goal is to support Tiger Heart's conservation efforts and make a positive impact on the conservation of Sumatran tigers and their habitat.

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Diverging responses to natural and anthropogenic habitats in aftrotropical birds and butterflies

Habel,

Mulwa,

Wagner

et al. 2024

Biodivers Conserv

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Species respond differently to landscape structures and environmental changes. In nature conservation, however, responses of a few indicator groups are often generalised to the ecosystem level. In this study, we analyse how birds and butterflies respond to identical landscape structures and environmental gradients across a habitat mosaic in southern Kenya. The study area represents natural coastal forest (forest interior and forest edge) as well as different agro-environments (such as orchards and pastures), which partly may also be suitable surrogate habitats for forest species. We assessed birds and butterflies during the same time along identical line transects, covering the dry and the rainy season. The obtained results indicate that both species groups depict habitat types in some aspects similarly but in others in somewhat different ways. Thus, strongest differences in community similarity were visible between forest interior and the open landscape like pastures for both taxa. The forest community strongly overlapped with orchards for birds but less so for butterflies. Thus, orchards in close geographic proximity to natural forests might be a possible surrogate habitat for certain forest bird species, but less so for more sedentary forest butterfly species. The temporal variation in species richness, abundances, and community structures was much stronger for butterflies compared to birds. Thus, seasonality in tropical ecosystems has to be considered especially when interpreting community structures of butterflies, but much less so in birds. In general, birds and butterflies proved to be suitable indicator groups to evaluate ecologically landscape structures in East Africa, with birds more representing the landscape level and butterflies more the fine-grained habitat scale.

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The importance of dynamic open-canopy woodlands for the conservation of a specialist butterfly species

Cited by 7 publications

References 40 publications

Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019

Rapid and continuing regional decline of butterflies in eastern Denmark 1993-2019

Peningkatan Kapasitas LSM Tiger Heart Dalam Melakukan Analisis Tutupan Lahan

Diverging responses to natural and anthropogenic habitats in aftrotropical birds and butterflies

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