The tropical regions are home to over 80 percent of all insect species on Earth, yet most research and data come from temperate areas. That mismatch is at the heart of a new framework from Monash University researchers, who argue that it leaves the tropics behind when it comes to conservation.
Dr. Shawan Chowdhury, who leads the Global Change Ecology Lab at Monash University’s School of Biological Sciences, spearheaded the strategy. It was published in BioScience and gathers international specialists in tropical ecology to pinpoint reasons insects are being neglected and outline ways to correct the oversight.
The Tropical Knowledge Gap
The animal kingdom’s most numerous category belongs to insects, which scientists believe could number anywhere from 14 to 30 million distinct species, with the vast majority still awaiting formal documentation.
The ecological role of insects is immense. They pollinate over 80 percent of wild plant species, provide sustenance for 60 percent of bird species, and underpin food webs, nutrient recycling, and global food output.
While there is mounting proof that insect numbers are falling, most of the research that guides protection efforts comes from temperate areas, which hold only roughly 20 percent of the planet’s insect variety.
The gap between where researchers look and where insects actually reside poses a serious risk to conservation efforts, according to Dr. Chowdhury. He warned that this mismatch could lead to programs missing the very locations where most insect species make their homes.
“More than 80 percent of insect species occur in the tropics, yet these are the very places where we have some of the biggest gaps in our knowledge,” Dr. Chowdhury said.
“We cannot effectively conserve species if we don’t know what is there, where populations are changing, or even where important existing knowledge can be found.”
The disparity in current records is striking. Almost all of the insect distribution data in the Global Biodiversity Information Facility, roughly 26 percent, originates from a single nation, the United Kingdom, despite the fact that most of the world’s insect variety exists in tropical zones.
Four Barriers to Protecting Insects
Four key issues stand in the way of protecting tropical insects, according to the research team’s findings: a lack of visibility for existing work, serious data gaps, weak scientific infrastructure, and insufficient action taken to conserve these species.
The framework proposes expanding the pool of data to fix these problems. It points to conventional scientific research alongside regional and non-English publications, museum holdings, local knowledge, citizen science efforts, observations posted online, and new technologies.
The team additionally emphasizes the importance of building up local scientific capability and ensuring that practical evidence finds its way to policymakers who can then make conservation decisions from it.
“Insects are fundamental to functioning ecosystems and food production, but they remain dramatically underrepresented in biodiversity monitoring, protected areas and conservation policy,” Dr. Chowdhury said.
Bangladesh as a Test Case
To show how their framework operates in real life, the researchers turned to Bangladesh, a densely populated tropical nation that offers a practical illustration of both the challenges standing in the way of insect conservation and the chances for advancing it.
The team found 111 relevant studies involving butterflies in Bangladesh. Only 34 had been published in international journals.
Of the studies examined, nearly two-thirds concentrated on where different butterfly species were found, while only three took a specific interest in conservation.
Facebook proved to be a surprisingly fertile repository for data on threatened butterflies in Bangladesh, with earlier studies showing that it held records for 167 of 169 of those species.
This discovery shows that non-standard sources can plug significant knowledge holes, particularly in nations where official records on living species remain thin.
The case of Bangladesh shows just how urgent it is to turn improved information into real conservation action. Out of 226 butterfly species examined through earlier research, only a single one was found to be adequately covered by the nation’s current system of protected areas.
“Bangladesh shows that a lack of conventional data does not mean we have to accept a lack of conservation action,” Dr. Chowdhury said.
“By bringing together local knowledge, citizen science, social media, scientific monitoring and regional expertise, we can build a much clearer picture of where species occur and where conservation effort is most urgently needed.”
The Problem With “Parachute Science”
The researchers also contend that international conservation research must stop relying on “parachute science.”, instead opting for a framework that builds local scientific capacity and treats regional knowledge as a central resource rather than a supplement.
“Some of the information we desperately need already exists but it may be in a local journal, held by a regional expert, sitting in a collection, or even contained in photographs shared online,” Dr. Chowdhury said.
“The answer isn’t simply to collect more data. We need to become much better at finding, connecting and using the knowledge that already exists, while building the local expertise and infrastructure needed for long-term monitoring.”
The Numbers Behind the Imbalance
The gap between the sources of insect data and the locations where insect variety actually exists is striking. The figures show the scale of the difference.
| Region | Share of World’s Insect Diversity | Conservation Knowledge | Key Data Point |
|---|---|---|---|
| Temperate | About 20 percent | Much of existing scientific knowledge | UK alone provides nearly 26 percent of Global Biodiversity Information Facility data |
| Tropical | More than 80 percent | Severe data gaps | Only 34 of 111 Bangladesh butterfly studies in international journals |
The table makes plain the central issue: the regions with the greatest number of insects are precisely those where scientists have the least knowledge.
A Wider Net for Conservation Data
The core argument put forward is that the knowledge required to safeguard tropical insects is distributed across separate sources. The trouble is that it has yet to be brought together.
Specimens sit inside museum collections without ever having been turned into digital form. Knowledge carried by local experts remains unpublished. Observations posted by citizen scientists stay outside formal databases. Facebook and other social media platforms hold photographic records that researchers have barely looked at.
According to the Monash researchers, viewing these materials as genuine scientific proof would allow major gaps to be closed swiftly, without needing fresh field missions.
The Bangladesh butterfly case is the clearest example of this dynamic.
Why It Matters
Most wild plants rely on insects for pollination, most bird species depend on them for food, and they form the foundation of the food chains that support agriculture. Conservation policy cannot afford to overlook them in the tropics, because the consequences would spread far beyond their immediate habitat.
The authors do not advocate amassing more data simply to have it. Instead, they urge a wiser use of the data that is already available, paired with more robust local structures to sustain the effort over time.
A practical path forward exists within the framework, yet it hinges on a change in how international research operates. Local scientists must be regarded as partners, local knowledge as evidence, and local infrastructure as a priority.
Most of the world’s insect species live in the tropics. The new plan for conservation begins by simply identifying what is already present, rather than building up from scratch.
Source: sciencedaily.com
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