Scientists tested the two hypotheses with wild colonies of acacia ants (Pseudomyrmex spinicola), which make their nests in the hollow spines
of acacia trees in Panama.
Not exact matches
Attenborough aims to persuade first through the detail and intimacy
of his account
of insect life: the female bumble bee's patient construction
of the chamber
in which she lays her eggs; the cooperative relationship between African
acacias and the ants that make «mansions»
in the «bloated and hollow» bases
of the
tree's protective spines (and sting the muzzles
of grazing predators, driving them away); the cunning design
of the mole cricket's burrow, which amplifies the male's mating song so that, «on a windless night, he can be heard from nearly half a mile away.»
In terms
of social and economic impact,
acacia trees are a sustainable and valuable resource for the population.
The vicious thorns
of the
acacia tree, insects flying around the eyes — these are no match for the tongue
of the giraffe, one
of the longest
in the animal kingdom.
The standard theory
of evolution is that animals that randomly inherited genes that produced beneficial traits —
in the case
of the giraffe, a longer neck, which made it easier to reach tall
acacia trees — ate better, reproduced more often and passed these gene variants to their offspring.
Without large grazing herbivores to eat them,
acacia trees suffer because
of a shift
in the ant populations they house
It's a David versus Goliath kind
of story, with an ecological twist:
In African savannas (regions with both trees and grass), acacia - dwelling ants can repel voracious, tree - eating elephants, according to new research by published online September 2 in Current Biolog
In African savannas (regions with both
trees and grass),
acacia - dwelling ants can repel voracious,
tree - eating elephants, according to new research by published online September 2
in Current Biolog
in Current Biology.
The mutualistic relationship between the ants and the
acacia, by mediating elephant damage, is a key influence on the amount
of tree cover
in the savanna.
In the western portion of L8, three large rounded holes (green circles in Figure 2) originated from roots of acacia trees that grew on the surfac
In the western portion
of L8, three large rounded holes (green circles
in Figure 2) originated from roots of acacia trees that grew on the surfac
in Figure 2) originated from roots
of acacia trees that grew on the surface.
In the wild they eat the sap and gum
of the eucalyptus and
acacia tree plus pollen, nectar, manna (a sugar deposit from the sap oozing from wounds on
tree branches or trunks), honeydew (sugar secreted by sap - sucking insects) and a wide variety
of insects and spiders.
One
of the best birding reserves
in the country, Ndumo has a series
of gorgeous pans surrounded by yellow fever
trees and extensive wetlands, sand forest,
acacia savannah and reedbeds.
I often saw,
in Somalia, lone camels munching on thorny
acacia trees or standing, regal,
in the middle
of a road.
Of baby elephants rolling about
in mud, graceful giraffe peering over
acacia trees, cheeky monkeys snatching muffins and bananas from breakfast tables, long - legged impala (the archetypical African antelope) bounding gracefully across savannah plains, and hyena pups suckling on their mother.
Impala would huddle beneath the wide shade
of the
acacia trees, elephants would go down to the river
in herds to wet themselves and quench their thirst.
by train) and Portofino, Camping «LA SFINGE» is located at Deiva Marina, immersed
in a landscape... Read more
of pine and
acacia trees in an enchanting valley.
by train) and Portofino, Camping «LA SFINGE» is located at Deiva Marina, immersed
in a landscape
of pine and
acacia trees in an enchanting valley.
Breakfast and lunch are served
in the garden under a canopy
of acacia trees.
Full - day wildlife game drives through the beautiful reserve with its rolling savannah, punctuated by the iconic flat topped
acacia trees,
in search
of the best possible game viewing.
Wedding facilities are available and ceremonies can be performed
in the gazebos overlooking a valley
of acacia trees and indigenous flora and fauna, perfect for those wishing to take home precious photographs
of that special day.
as one
of the university town
in the Philippines, one must visit the very known university
in town which is Silliman, it's the first American university
in Asia, it's uniquely situated at the center
of the city surrounded by those big
acacia trees.
Lying at the foot
of Mount Kilimanjaro, among yellow barked
acacia trees and cream slate, this lodge blends perfectly into the African savannah and is
in a marvellous spot for elephant watching.
This oasis
of beautifully designed safari tents is nestled amongst cordia and
acacia trees, located
in a gorgeous wilderness area teeming with game, and enjoys panoramic views
of the plains.
Lake Manyara, a small breathtaking National Park with an immense natural richness is home to over 380 bird species and the famous
tree - climbing lions, which for reasons unknown sleep
in the branches
of acacia trees.
Situated
in the north
of Johannesburg superbly set
in an indigenous garden between aloes and
acacia trees,...
Halfway down the flight
of stairs is a temple that overlooks the surf, and sharing the coastal forest features with Uluwatu, you will occasionally witness playful grey long - tailed macaques playing around the stairs on the Balinese «gapura» gate, and high up
in the
acacia trees.
Working
in a stunning variety
of materials — including wood, stone, metal, plaster, resin,
acacia thorns — the artist makes palpable and present the analogous processes
of nature and art: carving large
trees along their growth patterns to reveal the sapling contained within; elaborating the interior space
of his closed hand into a large - scale sculpture that both contains his hand and enlarges the space it contains; rendering the swirling mists
of his breath
in the cold
in tactile clay forms that contain the impression
of his body.
Part
of the problem is visible around refugee camps
in this West Darfur city or particularly around the Kalma camp near Nyala
in South Darfur, where a forest
of baobab,
acacia, palm and other
trees has been largely decimated by the displaced, who scrounge for firewood or logs to sell.
On the other side
of the world,
in Niger, farmers faced with severe drought and desertification
in the 1980s began leaving some emerging
acacia tree seedlings
in their fields as they prepared the land for crops.
They jettisoned the sad mini-blinds
in favor
of breezy linen panels that don't impede their views
of the
acacia trees, then swapped the dusty, globe - shaped fixtures for sleek, $ 20 pendants from Ikea.