What fish can live with Australian rainbowfish?

Is the population size of desert rainbowfish too small for Conservation?

The findings suggest that the population size of desert rainbowfish, at least during very dry periods of the year, is less than that commonly thought necessary in nature for species conservation and for adaptation to future climate changes. This turns on its head traditional thinking that small populations are evolutionary dead ends.

Why is the desert a threat to biodiversity?

The biodiversity is at risk and potentially threatened species could die out in those areas or become extinct; this is a particular concern for species that exist in just one desert on the planet. An example of this is the increased rates of desert songbirds in the US experiencing dehydration (49).

Why are there so many archaeological remains in deserts?

Various tribes of Native Americans made their homes in the deserts of North and Central America, as did the Kalahari Bushmen and Australian aborigines. Deserts are ideal for tracking animals and provide enough food in the right volumes to support hunter-gathering communities. It’s no wonder we find so much archaeological remains in deserts.

Why does the average rainfall not occur in the desert?

The coarse nature of the soil means most moisture seeps through the top soil rapidly. Furthermore, what precipitation a desert does experience is erratic. The average rainfall is just that. A desert may receive far more than the “average” in one year and not experience any rainfall the year before and the year after.

How did rainrainbow fish get its name?

Rainbow fish deservedly earned their name from the amazing variety of colors that the fish display. The colors seem to change as they swim about, giving a beautiful show for the aquarists.

What is the history of the rainbowfish?

The first rainbowfish ( Melanotaenia nigrans) was scientifically described in 1843 from a collection of freshwater fishes acquired in the Northern Territory. They were collected by John Gilbert in 1840, from the King River, near Victoria Settlement in the Northern Territory, Australia.

How many fish species have been added to the scientific literature?

Gerald Allen has added at least eighty new fish species to the scientific literature. This includes about forty species of rainbowfishes (including one new genus), nine species of blue-eyes, fourteen species of gudgeons, nine species of gobies, plus various species in other families.

Why is there very little biodiversity in the desert?

Regardless of whether the temperature is extremely hot or extremely cold, there is very little biodiversity in the desert because it is a harsh climate. An error occurred trying to load this video.

Why do we need biodiversity in the ocean?

Our existence depends on an earth having an abundance of biological diversity. Biodiversity is necessary to support all living species and their health. We cannot obtain food sources without biodiversity. The oceans too must be home to a biodiversity of life if we hope to count on seafood to nourish us.

What are the three greatest threats to biodiversity?

The human population requires resources to survive and grow, and those resources are being removed unsustainably from the environment. The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of exotic species.

What is the biodiversity of the Mojave Desert?

Given these conditions, the Mojave Desert is considered one of the harshest ecosystems on the planet, and this is reflected in its biodiversity, or the amount of animal and plant life in a particular habitat. Plants that live in hot deserts must be specialized to deal with high temperatures and very little water.

What is the environment of the tropical desert region?

The environment of the tropical desert region is the utmost. It is the driest and hottest place on earth. The rainfall occurs occasionally and sometimes there are no measures to calculate how much rain is falling in this region. The average annual rainfall is less than 25 cm. Due to a shortage of water, there is less vegetation growing here.

Why doesn’t it rain in the Atacama Desert?

Although humidity is high, the atmospheric changes that normally cause rainfall are not present. A coastal desert may be almost totally rainless, yet damp with fog. The Atacama Desert, on the Pacific shores of Chile, is a coastal desert. Some areas of the Atacama are often covered by fog. But the region can go decade s without rainfall.

What is the average precipitation in a subtropical desert?

In some of the areas, the annual precipitation can be as low as 2 cm such as in Northern Africa and Central Australia. Examples of subtropical deserts are Mojave, Sonoran, Chihuahuan, the Sahara, and the Great Victoria Deserts, Patagonian desert, Iranian desert, Gobi desert, the Tanami desert, etc.

What percentage of the world is covered by desert?

Deserts are found on every continent and cover about one-fifth of Earth’s land area. They are home to around 1 billion people—one-sixth of the Earth’s population. Although the word “desert” may bring to mind a sea of shifting sand, dunes cover only about 10 percent of the world’s deserts.

What are some interesting facts about deserts?

Deserts are found on every continent and cover about one-fifth of Earth’s land area. They are home to around 1 billion people—one-sixth of the Earth’s population. Although the word “desert” may bring to mind a sea of shifting sand, dunes cover only about 10 percent of the world’s deserts. Some deserts are mountainous.

Where to find fossils in the desert?

Shell Fragments from the Fish Creek Area In the desert areas south of Anza Borrego State Park lie still other geologic formations rich in fossils, for instance the Imperial Formation in the Fish Creek and Coyote Mountains.

How is biodiversity a threat to human welfare?

The core threat to biodiversity on the planet, and therefore a threat to human welfare, is the combination of human population growth and the resources used by that population. The human population requires resources to survive and grow, and those resources are being removed unsustainably from the environment.

What is the biodiversity of the desert?

The biodiversity, or variety of life in the desert, is based upon organisms that are specially adapted to survive without a ready supply of water. Whether hot or cold, the biodiversity of the desert is very low. In a hot desert environment, plants consist primarily of cacti.

Why do most archaeological finds come from the desert?

Some of our greatest archaeological finds have come from desert environments. As with anaerobic conditions of wetlands where organic material is cut off from microbes, such material survives in deserts due to the lack of moisture and bacteria that can eventually break it down.