Investigating the Trend of the Great Slaty Woodpecker (Mulleripicus pulverulentus) Population Status in Western Nepal

  • 0Bird Conservation Nepal (BCN) Kathmandu Nepal.

|

|

Summary

This summary is machine-generated.

The Great Slaty Woodpecker requires large trees for nesting, as indicated by its population decline and habitat loss. Conservation efforts must focus on protecting these large trees, especially outside protected areas.

Area Of Science

  • Ornithology
  • Conservation Biology
  • Ecology

Background

  • The Great Slaty Woodpecker (Mulleripicus pulverulentus) faces rapid population decline due to primary forest habitat loss.
  • Current data on its status and distribution is insufficient, despite its Vulnerable global classification.

Purpose Of The Study

  • To assess the current population status, distribution, and habitat requirements of the Great Slaty Woodpecker in Nepal.
  • To investigate the relationship between tree diameter and woodpecker presence and model suitable habitat.

Main Methods

  • Field surveys were conducted from 2019-2021 across 29 transects in Nepal's western Terai Arc Landscape.
  • Diameter at breast height (DBH) of cavity trees was measured, and habitat distribution was modeled using occurrence points.

Main Results

  • 81 individuals were recorded, with a significant portion found within protected areas.
  • A direct correlation was found between tree DBH and woodpecker presence, with an average DBH of 61.26 cm for cavity trees.
  • Approximately 6738 km² of suitable habitat was identified, with a substantial amount outside protected areas.

Conclusions

  • Large trees are critical for Great Slaty Woodpecker nesting and survival.
  • Habitat outside protected areas, including community forests, is vulnerable to selective logging, threatening the species.
  • Further research on logging impacts is crucial for effective conservation strategies.

Related Concept Videos

Conservation of Declining Populations 02:07

9.8K

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.

Conservation efforts often utilize scientific approaches to identify the reasons, or the agents, causing the population to decline. This approach then devises steps to remove, oppose, or neutralize the agents.

Conservation efforts may also introduce a test group to determine the probable cause of the decline. The...

Threats to Biodiversity 01:50

23.0K

There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...

Testing a Claim about Mean: Unknown Population SD 01:21

3.6K

A complete procedure of testing a hypothesis about a population mean when the population standard deviation is unknown is explained here.
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used;...

Conservation of Small Populations 02:04

13.7K

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...

Habitat Fragmentation 02:31

17.9K

Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.

Perforation and dissection often occur during the initial stages of...

Types of Selection 01:46

41.5K

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...