A tropical seasonal forest is found in areas with a long dry season. During the dry season, there is some defoliation, the extent of which is determined by the severity of the moisture shortage. The forest's structure is also simpler than that of the rainforest, with fewer tree strata and fewer luxuriant climbing and herbaceous plant growths. Only some tree species drop some or all of their leaves during the dry season, which is a distinguishing feature of seasonal tropical forests. Moist deciduous, semi-evergreen seasonal, tropical mixed, or monsoon forests are other names for them. This article will explain to you about Tropical Seasonal Forests which will be helpful in preparing the Environment syllabus for the UPSC Civil service exam.

Tropical Seasonal Forests - Distribution

• Seasonal (mixed) tropical forests can be found in many sections of the tropical zone, including Madagascar's lowland forests, the Asia-Pacific region, Northern Australia, the Americas' Atlantic forests of Brazil, Central, and Eastern Panama, and Africa's Coastal West Africa.
• They can be found in India's the Western Ghats between 13° and 15° north latitude, as well as on the Deccan Plateau and parts of Bangladesh.
• The tropical seasonal forests can be found in Thailand, Cambodia, Laos, Myanmar, and Vietnam in Southeast Asia.
• From the Thailand-Malaysia border to the Isthmus of Kra, there is a deciduous seasonal forest. Seasonal forest originally covered the majority of lowland Java.

Distribution of Tropical Seasonal Forests

Tropical Seasonal Forests- Abiotic Components

• Abiotic factors are nonliving components of an ecosystem that influence its surroundings.
• They include weather, climate, temperature, soil, precipitation, etc.

Climate

• This forest has a tropical monsoon climate with high overall rainfall concentrated in the summer wet season and (often cooler "winter") dry season, representing a range of habitats influenced by monsoon or tropical wet savannah climates.

• Evergreen seasonal forests receive 98 inches or more of rain each year on average but have a dry phase of 6 or more months with less than 4 inches.
• Dry forests receive 32-71 inches of rain per year, with 5 consecutive months averaging less than 4 inches each.
• Throughout the year, monthly temperatures average over 64.4° F.

Soil

• Tropical seasonal forests and woodlands are not related to any particular soil type.
• Iron-rich laterites or oxisols form on ancient plateau surfaces in Africa, where soils are generally barren and acidic.
• Dry forests in the Americas are found on soils that are more fertile and less acidic than those that support tropical savannas.
• The soils in Asia are mostly ultisols.

Tropical Seasonal Forests- Biotic Components

• Biotic factors are living components or factors that influence an ecosystem or the animals that live inside it.
• The biotic factors include producers, consumers, and decomposers.
• Producers are autotrophs capable of producing their own food whereas consumers are heterotrophs that depend on producers for food.
• Green plants that produce their own food from photosynthesis are included under producers.
• Consumers include many species such as goats, zebras, antelopes, lions etc.
• Decomposers consume decayed organic matter such as bacteria.

Producers

• Woodlands, thorns, and scrub make up the forest.
• During the dry season, most have closed canopies that are deciduous.
• Importantly, the closed canopy reduces grasses and thus fires, distinguishing them from tropical savannas found in similar temperate zones.
• They contain three layers of trees, with only the topmost layer being deciduous.
• Actually, the uppermost layer has trees that are so widely spread that there are only two strata, both of which are evergreen.
• Trees have smaller, thicker leaves with a leathery feel and thick cuticles than tropical rainforest species.
• Although the bark of these trees is thin, it is usually thicker than that of rainforest trees.
• This biome in Central and South America is said to have a high autotrophic species richness.

Consumers

• Seasonal tropical rainforests have a lot of heterotrophic diversity.
• There are plenty of mammals, birds, reptiles, and amphibians in this forest.
• Ants and termites are found in a wide range.
• Primates, giant rodents in the Neotropics, and insectivorous creatures such as anteaters and armadillos (Americas), pangolins and aardvarks (Africa), and certain lemurs are among mammals (Madagascar).
• Sloths in the Americas and langurs in Asia have adapted to a leaf-based diet.
• Some of these forests are home to large cats like jaguars (Americas) and tigers (Asia), as well as smaller carnivores like fossa (Madagascar) and mongooses (Asia).
• Elephants and rhinoceroses are large herbivores that forage and seek shelter in Africa and Asia's seasonal forests.

Conclusion

Large-animal hunting in tropical seasonal forests may have unintended consequences for forest structure, since prey species numbers may skyrocket once free of predation. Increased numbers of tiny mammals, for example, could have serious consequences for other organisms, leading to the eventual collapse of entire ecosystems. The creation of reserves to protect biodiversity, the regulation of exploitative use of tropical rainforest products, the engagement of traditional societies, the development of sustainable use strategies that address poverty, and an increased effort by developed countries to form partnerships with developing countries are all major elements of a tropical rainforest conservation strategy.