Tag: beavers

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Life in Balance is Good

Life in Balance Is Good

When God created and populated the Earth, he ensured everything was balanced. Genesis 1 describes the creation. After referencing the formation of life forms in verse 24, verse 25 concludes with “..and God saw that it was good.” Verses 26-31 describe the creation of humans and their relationship to vegetation and animal life. The chapter concludes by saying, “And God saw everything that He had made, and behold, it was VERY good.” God’s design in the natural world keeps life in balance.

Herbivores eat plants, keeping them in balance by spreading the seeds for more plants to grow. Carnivores keep the herbivore life in balance by feeding on the weak and old ones, preventing plants from being over-eaten. This simplified description of balance is evident in wild places worldwide. We have too often seen humans upset that balance. Selfishness, greed, ignorance, and power struggles have contaminated what was “very good” when God turned it over to humans to care for (Genesis 2:15).

Natural life in balance is excellent evidence of God’s design and wisdom in the creation. We can see what happens when humans upset that balance in these examples:

1) In the 1980s, Pablo Escobar, a Columbian drug lord, brought four hippos into the ecosystem. With no predators to control them, that number is 130 in 2024 and estimated to become 1400 by 2034. The estimated cost of removing the hippos is some 24 million dollars. With no natural enemies, the hippos have become a hazard to the people of Columbia.

2) In 1946, Argentina imported ten breeding pairs of beavers from North America, hoping to establish a fur industry. There are now roughly 100,000 beavers in Argentina, and they have decimated the native trees and built dams that have flooded forests and killed many native animal species.

3) In the 1970s, having a pet Burmese python was popular in Florida and became a raging business in Miami. When Hurricane Andrew ripped through Florida in 1992, hundreds of Burmese pythons escaped a reptile breeding facility. Today, tens of thousands of these snakes inhabit the Everglades. They can reach 20 feet long, weigh 200 pounds, eat just about anything, and spread parasites

These are just three examples of what happens when humans upset the balance that God built into the ecosystems of planet Earth. Finding a way to return the planet to life in balance as God made it is a massive challenge to biologists and wildlife managers. Human knowledge and understanding are very limited compared to God’s creative wisdom, which we see everywhere. To deny God’s existence and design requires more faith than any religious belief system.

— John N. Clayton © 2024
References: National Wildlife Federation, Fall 2024, pp 22-39, The Week, October 4, 2024, page 16, and Wikipedia.

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Elephants and Ecosystems

Elephants and Ecosystems

Yesterday we talked about ecosystems, what they are, and why they are essential. If you looked at yesterday’s picture, you saw that carbon sequestration was among the “services” provided by ecosystems. Today, there is much concern about atmospheric carbon (carbon dioxide and methane) increasing the “greenhouse effect” and causing global warming. That makes capturing carbon an essential service of ecosystems to protect our survival. One vital area involves African elephants and ecosystems.

Elephants are known as megaherbivores because of their size and the fact that they eat plants. New research has shown that elephants have a “profound” effect on forest ecosystems. We have mentioned before that beavers shape their environment to create ecosystems that support many other life forms. Researchers from Sweden, France, and the United States confirm that elephants are also “ecosystem engineers” that “significantly influence the structure and functioning of ecosystems” such as tropical rainforests in Africa.

The positive connection between elephants and ecosystems involves two aspects of elephant behavior. First, African forest elephants prefer to eat the leaves of trees with low wood density. This is because those leaves contain more protein and less fiber than the ones with high wood density. Secondly, elephants prefer to eat fruit from trees with higher wood density. By eating those fruits, the elephants disperse the seeds of the trees that sequester the most carbon.

Elephants spread more seeds of more plant species than any other animal. The elephant’s diet enables the survival and spread of the trees that store more carbon, keeping it out of the atmosphere. At the same time, elephants reduce overcrowding by the lower-density plants, allowing the larger trees to grow. This balance of elephants and ecosystems helps to protect the planet from excess carbon in the atmosphere.

The study concludes that elephant conservation will significantly affect global climate by controlling the amount of atmospheric carbon. God has designed a worldwide system of many ecosystems that make Earth suitable for advanced life to thrive. Our job is to protect the blessings God has given us to enjoy. Who doesn’t enjoy watching elephants?

— Roland Earnst © 2023

Reference: Proceedings of the National Academy of Sciences

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Beware of Praying Mantises

Beware of Praying Mantises
There are organizations that advocate natural control of pests as opposed to the use of chemicals. One effort to control garden pests involves the use of praying mantises. While the concept is good, there are complications. In the natural world with no human intervention, there is a balance between predator and prey. When humans upset that balance, the result is always catastrophic.

In Australia, for example, rabbits were introduced to control certain plants. The rabbits had no natural enemies, and in a very short time, the rabbit population was out of control. Now there is the problem of how to get rid of the rabbits. Here in Michigan, beavers have been brought back into the river where I live. Today they have no enemies, and the beaver population has grown to the point where it is almost impossible to keep decorative trees because the beavers eat them.

The December/January issue of National Wildlife magazine (page 10) brought a new issue to our attention. People have introduced large numbers of praying mantises to control the bugs that were eating their gardens. The problem is that they not only eat bugs, but they will also kill and eat hummingbirds. Some people who have deliberately added numbers of mantises to their property have discovered that they no longer have hummingbirds, and apparently the mantises are the cause.

The Wilson Journal of Ornithology reported a study in which there were 147 cases of praying mantises catching 24 different bird species. The praying mantises capture the hummingbirds at feeders or as the birds are getting nectar from a flower. When we see bad environmental situations in nature, it is almost always due to human mismanagement and not a fault in the design of the system.
–John N. Clayton