ABSTRACT
Kuala Langat South Forest Reserve (KLSFR) was the main highlight when Selangor State
Agriculture Corporation proposed to acquire the whole of KLSFR (about 6,908 ha) for the
establishment of oil palm plantations. Many parties expressed their concern and opposed the plan
as it would lead to the destruction of the forest and its biodiversity. As such, this study was aimed
to determine the forest structure and tree species composition to conserve and sustainably manage
the forest. Seven plots of 40 m x 20 m covering 0.56 ha were established randomly in KLSFR. All
trees with 5 cm diameter breast height (DBH) and above were tagged, measured and identified.
Voucher specimens were then taken for further verification purposes. The floristic composition of
KLSFR consists of 335 individuals represented by 47 tree species from 21 families. Annonaceae,
Guttiferaceae and Myristicaceae were the most speciose families with five species recorded for
each family. Goniothalamus malayanus and Koompassia malaccensis were considered to have
absolute dominance at the study site with Important Value index of 14.73 % and 14.19 %,
respectively. KLSFR recorded low Shannon-Weiner Diversity index of H’ = 2.85 (H’max = 3.81)
and Margalef’s Richness Index with DMG = 7.91. Evenness (E) index of 0.75 portrayed that the
tree species are almost equally abundant in the study area. Total trees biomass was estimated at
406.90 t/ha, represented by 349.61 t/ha of above ground biomass (AGB) and 57.29 t/ha of below
ground biomass (BGB). The study indicated that KLSFR has uniform distribution of individuals
with mixed species composition of trees. Tree distribution showed the pattern of De iocourt’s
factor procedure (inverse J distribution) where number of tree decreases with the increase in
diameter, representing the natural regeneration of the forest
A scientometric analysis was conducted to investigate the trends and development of crayfish research in terms of literature published, author, affiliation, and countries' collaborative networks, as well as the co-citation dataset (e.g., author, article, and keywords). The study analyzed 12,039 bibliographic datasets from the Web of Science, using CiteSpace as a tool for the co-citation analysis. The study revealed extraordinary increases in publication trends, with a total of 21,329 authors involved in approximately 80% of countries around the world (163/195) having conducted crayfish research. Unsurprisingly, countries such as the USA and China, followed by European countries, were among the top countries that have published crayfish-related studies. The findings also indicated that "invasive crayfish" was the world's top keyword for crayfish research. Crayfish species are important for both environmental sustainability (invasiveness and species composition) and social wellbeing (aquaculture), which provides directions for research, philanthropic, academic, government, and non-government organizations regarding how to invest limited resources into policies, programs, and research towards the future management of this species. Our study concluded that strategic collaboration among authors, institutions, and countries would be vital to tackle the issue of invasive crayfish species around the world.