Study Of The Relationship Of Environmental Factors To The Abundance And Diversity Of Mangrove Crabs (Scylla Spp.) In The Waters Of Estuary, Percut Village, Deli Serdang Regency

Introduction

The mangrove area in the waters of Percut Village is an area that has experienced many changes in land functions due to community activities. The reduction of mangrove land has an impact on the quality of the water and reduce the habitat for various biota, including mangrove crabs (Scylla spp.). This decrease in habitat is thought to affect the abundance and diversity of mangrove crabs in these waters. Understanding the relationship between environmental factors and the abundance and diversity of mangrove crabs is crucial in developing effective conservation actions.

Background

Mangrove ecosystems play a vital role in maintaining the quality of waters and providing habitats for various biota. The presence of mangroves contributes to the abundance of biota, including mangrove crabs. However, the reduced area of ​​this mangrove land has an impact on the quality of the water and reduce the habitat for various biota. The decrease in habitat is thought to affect the abundance and diversity of mangrove crabs in these waters. Until now, data regarding the abundance and diversity of mangrove crabs in the Estuary waters of Percut Village is not yet available, so this research is important.

Methodology

The purpose of this study is to explore the abundance, diversity, dominance, uniformity, and the relationship between physical-chemical parameters to the abundance and diversity of mangrove crabs. Sampling was carried out in June to July 2019 using 48 units of bubu tools that were repeated three times with a 14 -day interval. Each caught crab is calculated in number, and two specimens of each type found are taken to be preserved using 70% alcohol before identification based on reference books.

Results

The analysis of the results showed that the abundance of mangrove crabs in these waters was relatively low, with an average of 5-7 individuals per square meter (Ind/m²). Diversity (H ') is also classified as low, ranging from 0.661 to 0.826. Dominance (D) Mangrove crabs range from 0.559 to 0.853, while uniformity (E) ranges from 0.602 to 0.728. Research also found that some physical-chemical parameters, such as brightness, depth, pH, dissolved oxygen levels (DO), and salinity have a positive relationship with the abundance and diversity of mangrove crabs. However, some parameters such as temperature, nitrate, phosphate, and current velocity do not indicate a significant relationship.

Deeper Analysis

The mangrove area has an important role in aquatic ecosystems, including as a habitat for mangrove crabs. The presence of mangroves not only contributes to the abundance of biota, but also maintains the quality of the waters through the process of filtration and the provision of nutrients. Decreased quality and quantity of mangroves in Percut Village shows a serious impact on aquatic life that must be a concern of all parties.

Implications

Inadequate data regarding the abundance and diversity of mangrove crabs indicates the need for more effective conservation actions. The positive relationship between physical-chemical parameters and abundance and diversity shows that the management of water quality is very important. Therefore, efforts to maintain and restore the function of mangrove ecosystems through reforestation and supervision of community activities are very necessary.

Conclusion

In addition, to ensure the sustainability of mangrove crabs and biodiversity in estuary waters, further research is needed that explores other factors that may affect ecosystems, as well as community education about the importance of protecting the environment. With these steps, it is expected that the mangrove ecosystem in Percut Village can be well maintained and can support the abundance and diversity of mangrove crabs and other biota in these waters.

Recommendations

1. Conduct further research to explore other factors that may affect ecosystems, as well as community education about the importance of protecting the environment.
2. Implement effective conservation actions, such as reforestation and supervision of community activities, to maintain and restore the function of mangrove ecosystems.
3. Monitor and evaluate the impact of conservation actions on the abundance and diversity of mangrove crabs and other biota in the estuary waters of Percut Village.

Future Directions

This study highlights the importance of understanding the relationship between environmental factors and the abundance and diversity of mangrove crabs. Further research is needed to explore other factors that may affect ecosystems, as well as community education about the importance of protecting the environment. With these steps, it is expected that the mangrove ecosystem in Percut Village can be well maintained and can support the abundance and diversity of mangrove crabs and other biota in these waters.

Q: What is the purpose of this study?

A: The purpose of this study is to explore the abundance, diversity, dominance, uniformity, and the relationship between physical-chemical parameters to the abundance and diversity of mangrove crabs in the waters of Estuary, Percut Village, Deli Serdang Regency.

Q: What methods were used in this study?

A: Sampling was carried out in June to July 2019 using 48 units of bubu tools that were repeated three times with a 14 -day interval. Each caught crab is calculated in number, and two specimens of each type found are taken to be preserved using 70% alcohol before identification based on reference books.

Q: What were the results of this study?

A: The analysis of the results showed that the abundance of mangrove crabs in these waters was relatively low, with an average of 5-7 individuals per square meter (Ind/m²). Diversity (H ') is also classified as low, ranging from 0.661 to 0.826. Dominance (D) Mangrove crabs range from 0.559 to 0.853, while uniformity (E) ranges from 0.602 to 0.728.

Q: What are the implications of this study?

A: Inadequate data regarding the abundance and diversity of mangrove crabs indicates the need for more effective conservation actions. The positive relationship between physical-chemical parameters and abundance and diversity shows that the management of water quality is very important. Therefore, efforts to maintain and restore the function of mangrove ecosystems through reforestation and supervision of community activities are very necessary.

Q: What are the recommendations of this study?

A: 1. Conduct further research to explore other factors that may affect ecosystems, as well as community education about the importance of protecting the environment. 2. Implement effective conservation actions, such as reforestation and supervision of community activities, to maintain and restore the function of mangrove ecosystems. 3. Monitor and evaluate the impact of conservation actions on the abundance and diversity of mangrove crabs and other biota in the estuary waters of Percut Village.

Q: What are the future directions of this study?

A: This study highlights the importance of understanding the relationship between environmental factors and the abundance and diversity of mangrove crabs. Further research is needed to explore other factors that may affect ecosystems, as well as community education about the importance of protecting the environment. With these steps, it is expected that the mangrove ecosystem in Percut Village can be well maintained and can support the abundance and diversity of mangrove crabs and other biota in these waters.

Q: What are the benefits of this study?

A: This study provides valuable information about the relationship between environmental factors and the abundance and diversity of mangrove crabs. The findings of this study can be used to develop effective conservation actions to maintain and restore the function of mangrove ecosystems. Additionally, this study highlights the importance of community education about the importance of protecting the environment.

Q: What are the limitations of this study?

A: This study has several limitations, including the limited sample size and the lack of data on other factors that may affect ecosystems. Additionally, this study was conducted in a specific location and may not be representative of other mangrove ecosystems.

Q: What are the future research directions?

A: Future research should focus on exploring other factors that may affect ecosystems, such as climate change, pollution, and human activities. Additionally, further research is needed to develop effective conservation actions to maintain and restore the function of mangrove ecosystems.